Challenge Slots

Welcome, one and all, to the Challenge Slots!
This challenge is an old standard from the old forums. It's a weekly game - each week, a challenge will be set. The winner of the previous challenge will roll twice on this glorious list of restrictions using a random number generator such as rolz.org (reroll duplicates or conflicts), and then add a third one, which will be permanently appended to the list.
The current Slots are in this big box here; voltaic-qui has graciously posted the initial list of 80 below.

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LIMIT #1: Common sense: your card is a common or uncommon.
LIMIT #2: Well-done. Your card is a rare. (Mythics are rare.)
LIMIT #3: Your card uses an evergreen keyword.
LIMIT #4: Your card uses a non-evergreen keyword.
LIMIT #5: Your card uses a completely new keyword of your own invention.
LIMIT #6: That card's a super freak: Your card has a supertype. (e.g., basic, legendary, snow, or world.)
LIMIT #7: Subliminal messaging: Your card has a (noncreature) subtype. (e.g., Aura, Equipment, Trap)
LIMIT #8: Did you ken? Your card makes or cares about tokens.
LIMIT #9: Ambiguity: Your card either counters spells or puts counters on permanents.
LIMIT #10: Flash! Aa-aaaaaaah! Your card is an instant, or can be played at instant speed.
LIMIT #11: What is this witchcraft? Your card is a sorcery.
LIMIT #12: You and me baby, we ain't nothin' but mammals... Your card is a creature.
LIMIT #13: Bless your soul: Your card is an enchantment.
LIMIT #14: Go, gadget, go: Your card is an artifact.
LIMIT #15: It's called a cantrip, not a can't-trip: Your card draws one or more cards.
LIMIT #16: Fo(u)r you: Your card has the number 4 in it. ( counts.)
LIMIT #17: The Challenge Slots has sentenced you to this challenge: you may only use up to three sentences in your card's textbox!
LIMIT #18: Let's get loquaciously sesquipedalian for this one! This particular restriction requires that this particular entry into our upstanding contest of skill shall contain three or more words in its name, and hold three or more lines of text within its textbox.
LIMIT #19: The sincerest form of flattery: your card is an homage to another card.
LIMIT #20: From 20 to 0: your card can hypothetically kill your opponent in one swing.
LIMIT #21: Your card's color identity contains white.
LIMIT #22: Your card's color identity contains blue.
LIMIT #23: Your card's color identity contains black.
LIMIT #24: Your card's color identity contains red.
LIMIT #25: Your card's color identity contains green.
LIMIT #26: Your card is monocolored.
LIMIT #27: Your card is multicolored.
LIMIT #28: Your card uses hybrid mana.
LIMIT #29: Your card is colorless, or uses the colorless mana symbol.
LIMIT #30: Your card has three or more (non-generic) mana symbols on it.
LIMIT #31: Kill! Destroy! Your card destroys a permanent.
LIMIT #32: Get out! Your card involves exile.
LIMIT #33: Eyeblights go home: your card has, or creates a token with, power equal to its toughness.
LIMIT #34: If it exists... your card bounces a permanent.
LIMIT #35: Even Steven: Your card's CMC is even.
LIMIT #36: Ain't it odd: Your card's CMC is odd.
LIMIT #37: The tiniest leader: Your card has CMC 3 or less.
LIMIT #38: Stuck in the middle: Your card has CMC 3, 4, or 5.
LIMIT #39: You've hit the big time: Your card has CMC 6 or greater.
LIMIT #40: Whatever tickles your fancy: pick one of the user-submitted prompts.
LIMIT #41: Kick it up a notch! Your card has an additional cost. (Thanks, Cancelion!)
LIMIT #42: My friends, your card is legen—wait for it... —dary! Legendary! (Thanks, Sewn-Eye!)
LIMIT #43: Dose out some devastating destruction to decimate your devious foes with direct damage! Your card deals noncombat damage to creatures and/or players! (Thanks, AgentPaper!)
LIMIT #44: What an entrance! Your card has an enter the battlefield effect! (Thanks, k1l1!)
LIMIT #45: I hope you remember how to use call numbers, because... your card lets you search your library! (Thanks, Sewn-Eye!)
LIMIT #46: Tap dancers will like this: your card uses the tap symbol! (Thanks, Elmdor!)
LIMIT #47: Stake your Claim! – Your card cares about (or is a) land! (Thanks, Styrofoamking!)
LIMIT #48: I'm not angry, just MAD! Your card involves discarding! (Thanks, EyeofTruth!)
LIMIT #49: Mix it up: Your card has an off-colour ability. (Thanks, lordofthetoasters!)
LIMIT #50: Death Benefits: your card needs a triggered ability when it and/or something else dies. (Thanks, Heads vs Tails!)
LIMIT #51: ACK! A SHADOW! Oh wait, its mine. Your card involves light. (Thanks, EyeofTruth!)
LIMIT #52: In response! Nevermind. Your card or card's ability can't be countered! (This includes cycling.) (Thanks, Decembra!)
LIMIT #53: Right on target! Your card targets another card on the battlefield! (Thanks, marioware2!)
LIMIT #54: If you can't go over, go around... your card has or grants evasion! (Thanks, Gyoza!)
LIMIT #55: No, just no! Your cards counters something or prevents something from happening. (Thanks, Daij_Djan!)
LIMIT #56: It worked so well the first time! Your card uses a keyword that's only been used in ONE block before. (Thanks, marioware2!)
LIMIT #57: Color intensive! Your card has three or more of the same mana symbol in its mana cost. (Thanks, Icarael!)
LIMIT #58: First name basis; Your card references another card by name. (Feel free to make this card!) (Thanks, Kyoril!)
LIMIT #59: It's like it pays for itself! Your card adds mana to your mana pool. (Thanks, marioware2!)
LIMIT #60: HULK SMASH! Your card has a power of five or greater! (Thanks, Nighthawk!)
LIMIT #61: Charge to 200 volts... Clear! Your card incorporates charge counters! (Thanks, CoreyImperia!)
LIMIT #62: We've all seen it coming: Your card uses or cares about a futureshifted mechanic! (Like Delve, Aura swap, Fortify..) (Thanks, Daij_Djan!)
LIMIT #63: Far out, man! Your card has a celestial or spacial flavor. (Thanks, Inanimate!)
LIMIT #64: X-actly! Your card has somewhere on it! (Thanks, Grishnax!)
LIMIT #65: Look, a rare breed! Your card has a subtype featured on 20 cards maximum. (Thanks, Daij_Djan!)
LIMIT #66: This one's on the house: Your card doesn't have a mana cost! (Thanks, Herzinth!)
LIMIT #67: In your __! Your card uses the word face (like in face up or face down). (Thanks, Flo00!)
LIMIT #68: Keep up! Your card has an effect that happens at the beginning of your upkeep. (Thanks, Udelude!)
LIMIT #69: I like big butts and I cannot lie! Your card has a positive interaction with toughness. (Thanks, MrShinyObject!)
LIMIT #70: I'm seeing double! Your card needs to either double something, or make a copy of something. (Thanks, Liz!)
LIMIT #71: Don't break your toys! Your card can't destroy permanents and can't deal noncombat damage! (Thanks, grishnax!)
LIMIT #72: A hero! A martyr! A statue to raise! Your card sacrifices itself. (Thanks, Herzi!)
LIMIT #73: Don't be so negative: Your card features a minus! (Thanks, Daij_Djan!)
LIMIT #74: My eyes, my eyes! Your card is related to either a Cyclops, Octopus, Gorgon, Eye or has a fog or -X/-0 effect. (Thanks, Yoshi!)
LIMIT #75: I can't even! Your card features an odd number of odd numbers. (Even numbers are allowed.) (Thanks, Fermat!)
LIMIT #76: Stop censoring me! Your card's rules text contains the word "can't". (Thanks, fluffyDeathbringer!)
LIMIT #77: Murder is cool! Your card has a single-word (not yet taken) name. (Thanks, Daij_Djan!)
LIMIT #78: Back in black (and/or white, blue, red, or green)!! Your card has an element of graveyard recursion. (Thanks, jacqui-pup!)
LIMIT #79: Get a life. No, really: your card must involve lifegain. (Thanks, jacqui-pup!)
LIMIT #80: Why the hell are you smiling!? Your card gives you advantages for being the target of aggression. (Thanks, Fermat!)
LIMIT #81: Are you a bad enough dude? Your card is strictly worse than a canon Magic card. (Please include the card that's better than your card in your post.) (Thanks, voltaic-qui!)
LIMIT #82: Maths is for nerds! Your card's rules text contains no numbers or number words. (Thanks, kinotherapy!)
LIMIT #83: Conjunction, junction, that's my function! You must use a keyword in conjunction with a non-numerical, non-mana cost modifier! (Reminder text doesn't count. For example, Equip legendary creature or Splice onto instant.) Be creative! (Thanks, Yoshi!)
LIMIT #84: You'll go down in history! You card is historic. (Historic permanents are artifacts, legendary permanents and sagas) (Thanks, digiman619!)
LIMIT #85: One for one! Your card neither gives you nor deprives you of card advantage. (Thanks, kinotherapy!)
LIMIT #86: Pay it how you like it! Your card features a mana symbol never before seen in Magic! (Thanks, Yoshi!)
LIMIT #87: Go out in style! Your card contains the text "You win the game." (Thanks, Casstastrophe!)
LIMIT #88: I can't see! Your card cares about a hidden zone in some way. (Thanks gamma3!)
LIMIT #89: One is the loneliest number: Your card must be (or produce) at least two different colors. (Thanks, viriss!)
LIMIT #90: It's a bird! It's a plane! It's your card! Your card contains the word "flying." (Thanks, monger!)
LIMIT #91: Oh no you don't, erm.. can't. Your card contains the rules text "opponents can't". (Thanks, viriss!)
LIMIT #92: Drive around! Your card is a Vehicle, cares or interacts with them. (Thanks, Daij_Djan!)
LIMIT #93: Let's give thanks. Your card benefits all players at the table! (Thanks, gateways7!)
LIMIT #94: Live death to the fullest! Your card makes you choose one or more cards in graveyards. (Thanks, monger!)
LIMIT #95: Parting is such sweet sorrow! Your card has a "leaves the battlefield" effect. (Thanks, Jartis!)
LIMIT #96: What's going on back there?! Your card has an ability that functions outside of the battlefield. (Thanks, kinotherapy!)
LIMIT #97: Tarot: Your card name must be a the name of a tarot card, or have the name of tarot card in it, you can skip "the". (And maybe don't do Wheel of Fortune since that already exists.) ex. Arrows of Justice is okay. (Thanks, viriss!)
LIMIT #98: I wonder which one is the main character? Your card is a Planeswalker or interacts with them. (Thanks, Jartis!)
LIMIT #99: How much is the fish? Your card cares about converted mana cost(s) in some way. (Thanks, ameisenmeister!)
LIMIT #100: Go big or go home! Your card is a God, has a converted mana cost of 10 or greater, or has the keyword Epic. (Thanks, gateways7!)
LIMIT #101: Hollaback, girl! Your card uses an untap symbol. (Thanks, viriss!)
LIMIT #102: Some people just want to watch the world burn! Your card has an element of chaos. (Thanks, ameisenmeister!)
LIMIT #103: Plane and simple. Your card is, mechanically relates to, or interacts with planeswalkers or Planes. (Thanks, gateways7!)
LIMIT #104: Better than one! Your card is designed for Two-Headed Giant. (Thanks, viriss!)
LIMIT #105: Waka, waka! Your card has flavor derived from real world's Africa. (Thanks, ameisenmeister!)
LIMIT #106: An exilent card! Your card benefits from other cards (and/or itself) being in exile. (Thanks melono!)
LIMIT #107: This one's limited edition - your card has a draft-matters theme. (Thanks, gateways7!)
LIMIT #108: So dense. Your card has three or more colored symbols in its mana cost! (Thanks, CanterburyEgg!)
LIMIT #109: East is east is east. Your card has flavor derived from real world's Asia. (Thanks, ameisenmeister!)
LIMIT #110: Negative, sir: Your Card has a drawback (as standalone, among other effects, or combined with a positive effect a la Xathrid Demon). (Thanks, Boogymanjunior!)
LIMIT #111: From outer space: Your card featues or is an external component. (An external component is something that influences the game "from the outside" like the monarch, planes or contraptions. You can read a bit about it here.) (Thanks, Flo00!)
LIMIT #112: You're out of touch, I'm out of life: Your card is (temporarily/conditionally) unblockable or grants unblockability in any form (Flying, unblockable, etc.). (Thanks, melono!)
LIMIT #113: You act the part! Your card has an activated ability. (Thanks, Boogymanjunior!)
LIMIT #114: Topically Typical: Your card has an ability that mentions a creature type. (Thanks, melono!)
LIMIT #115: Brave New World. Your card has flavor derived from real world's America (North or South). (Thanks, ameisenmeister!)
LIMIT #116: Pull the trigger. Your card has a triggered ability (Thanks, Boogymanjunior!)
LIMIT #117: Zero to hero just like that! Your card has the number or word 0 somewhere on the card. (Thanks, gateways7!)
LIMIT #118: Drop the bass: Your card is or references the Fish creature type. (Thanks, melono!)
LIMIT #119: Pay your tribute! Please? You card offers a choice to one or more opponents. (Thanks Flo00!)
LIMIT #120: Static friction in your face!: Your card has a static ability. (Thanks, Boogymanjunior!)
LIMIT #121: Can you paint with all the colors of the wind? Your card encourages you to play a 5-color deck! (Thanks, gateways7!)
LIMIT #122: Unbibium! Your card cares about Energy (). (Thanks, viriss!)
LIMIT #123: Tell me a story! Your card is tied to Magic lore past or present. (Thanks, Flo00!)
LIMIT #124: Bear in mind! Your card is a 2/2 with a converted mana cost of 2. (Thanks, gateways7!)
LIMIT #125: History lesson: Your card has flavor from a set released last year, this year, or next year. (Thanks, FLAREdirector!)
LIMIT #126: Product Replacement: Your card has a replacement effect. (Thanks, Boogymanjunior!)
LIMIT #127: From Heliod's locker. Your card either uses Devotion or grants at least three devotion to any color. (Thanks, Daij_Djan!)
LIMIT #128: My dear Watson!: Your card is an Elemental, makes Elementals, or otherwise cares about Elementals you control. (Thanks, FLAREdirector!)
LIMIT #129: Pain is pleasure on paper: Your card lets (at least) you lose life. (damage is life loss)(Thanks, Boogymanjunior!)
LIMIT #130: I put a spell on you! Your card cares about (other) sorceries and/or instants. (Thanks, melono!)
LIMIT #131: I don't ike this. Your card is better against specific cards, decks or archetypes. (Thanks Flo00!)
LIMIT #132: That reminds me of a song! Your card has a musical flavor or features singing of any sort. (Thanks, eshix!)
LIMIT #133: Zero stats, same Coke taste. Your card has base power or toughness 0 or can reduce another creature's power or toughness. (Damage doesn't count.) (Thanks, fluffyDeathbringer!)
LIMIT #134: Think positive! Your card features a plus. (Thanks Flo00!)
LIMIT #135: Release the kraken! Your card is an Octopus, Kraken, Leviathan, Serpent, or cares about those types! (Thanks, thaneofglamis!)
LIMIT #136: The animal kingdom's overrated! Your card is or cares about Plants, Fungi, or Saprolings. (Thanks, FLAREdirector!)
LIMIT #137: Snakes on a plane - your card names a canon plane in its name or flavor text! (Thanks, thaneofglamis!)
LIMIT #138: Pole dance - Your card has arctic or antarctic flavor. (Thanks, ameisenmeister!)
LIMIT #139: Adventure time! You card has an adventure! (Thanks Flo00!)
LIMIT #140: The Tour de France - your card has a cycling ability or cares about cycling! (Thanks, thaneofglamis!)
LIMIT #141: You and me, baby, all the way. Your cards have Partner with each other. (Design both cards. All the limits can be applied to one or both, or you can split the limits between the two.) (Thanks, gamma3!)
LIMIT #142: I wish upon a star! Your card either references a card outside the game (e.g. Glittering Wish) or has an effect from outside the game! (e.g. Gyruda, Doom of Depths) (Thanks, ZephyrPhantom!)
LIMIT #143: Malleable Label - Your card has an alternative casting cost (this includes cost reduction, but excludes additional costs). (Thanks, Boogymanjunior!)
LIMIT #144: Snow Joke! Your card contains or interacts with snow permanents. (Thanks, SilentKobold!)
LIMIT #145: In the end, there can only be one! Your card gets better if it's alone or if only one of something is present in a zone! (Thanks, ZephyrPhantom!)
LIMIT #146: Game, Interrupted: Your card has Split Second, or can cause a phase/step to end early. (Thanks, kefke!)
LIMIT #147: Robots in disguise, or not. Your card is a doubled faced transformer.
LIMIT 148: A plane down under - Your card has flavor from real world’s Australia or Oceania. (Thanks, Ameisenmeister!)
LIMIT #149: Did you know Antarctica is a desert? Your card cares about land types. (ex. Forest, Desert, Locus, etc) (Thanks, Jartis!)
LIMIT #150: Type Hype! Your card cares about a certain card type. (i.e. land, creature, sorcery, etc.) (Thanks, jrey15!)
LIMIT #151: Big city life - Your card is set on the plane of Ravnica. (Thanks, Ameisenmeister!)
LIMIT #152: Passing down an ancient legend - your card mentions legendary cards in its rules text! (Thanks, thaneofglamis!)
LIMIT #153: Here to stay! Your card is a permanent. (Thanks, Viriss!)
LIMIT #154: I have no fangs, yet I constantly bite. Your card mentions poison counters. (Thanks, Flo00!)
LIMIT #155: Come outside and play! - Your card is set on the plane of Zendikar. (Thanks, Ameisenmeister!)
LIMIT #156: A hands-on approach - your card cares about/interacts with your hand. (Thanks, melono!)
LIMIT #157: My big fat greek plane - Your card is set on the plane of Theros. (Thanks, Ameisenmeister!)
LIMIT #158: Once upon a time... Your card is a Saga or interacts with Sagas. (Thanks Flo00!)
LIMIT #159: Don't forget the little guy: Your card pays homage to or references a common card! (Thanks, Inferno390!)
LIMIT #160: Watch your fingers! All the numbers on your card sum to 10. (Numbers include mana cost, text box, p/t and loyalty costs. Number words don't count!) (Thanks SilentKobold)
LIMIT #161: Your word is my command(er). Get a random commander and make a card that would fit into it's deck. (Thanks Flo00!)
LIMIT #162: Fee Fi Fo Fum! Your card is a Giant or cares about Giants! (Thanks, Inferno390!)
LIMIT #163: You can't be serious! Your card is silver-bordered. (Thanks, Flo00!)
LIMIT #164: Modal double jeopardy! Your card is a modal double faced card. (Thanks, thaneofglamis!)
LIMIT #165:Highway 165. You're card cares about itself or another card changing zones. (Thanks, Viriss!)
LIMIT #166: Where in the Multiverse is Kayok and his Solarang? Your card features or references an original Planeswalker you've created (or will create for this challenge). (Thanks, ZephyrPhantom!)
LIMIT #167: Urza's architecture firm - your card is a Mine, Power-Plant, or Tower, or mentions one or more of those types! (Thanks, thaneofglamis!)
LIMIT #168: Sirius Lee meets Joe King. Your card contains a pun. (Thanks Flo00!)
LIMIT #169: One plus one sometimes just makes a bigger one! Your card (or cards in this case) are a meld pair! (Thanks, quazerflame!)
LIMIT #170: how bout I do anyway?: Your card invokes the first Golden Rule of Magic (Rule 101.1)). (Thanks, kefke!)
LIMIT #171: Sunrise, sunset. Your card either has the abilities daybound and nightbound, or it otherwise uses and cares about day and night. (Thanks, quazerflame!)
LIMIT #172: To infinity and beyond! Your card references a work of fiction that is not part of Magic. (Thanks, Flo00!)
LIMIT #173: Cardboard picture horror show - Your card is set on the plane of Innistrad. (Thanks, ameisenmeister!)
LIMIT #174: Lucky you! Your card features or refers to coin filps or dice rolls. (Thanks, Flo00!)
LIMIT #175: Those who cannot remember the past... - Your card is set on the plane of Dominaria. (Thanks, ameisenmeister!)
LIMIT #176: Be my guest: Your card is or cares about the creature type Guest. (Thanks, viriss!)
LIMIT #177: Heavy metal! ... and some oil. Your card is set on the plane of Mirrodin/New Phyrexia. (Thanks Ameisenmeister!)
LIMIT #178: Pimp my whatever! Your card refers to modified or modifications. (Thanks Flo00!)
LIMIT #179: Tradition and technology. Your card is set on the plane of Kamigawa. (Thanks, Ameisenmeister!)
LIMIT #180: Like in an action movie: Your card mentions an action keyword. (like Scry or Discard – see here for full list.)(Thanks, Daij_Djan)
LIMIT #181: You stab my back and I stab yours. - Your card is set on the plane of Fiora. (Thanks, Ameisenmeister!)
LIMIT #182: Triple the threat, double the fun, but only half the story! Your card causes or cares about multiplication or division! (Thanks, melono!)
LIMIT #183: I do not like to repeat myself! Your card can't use the same word twice. (That includes name, type line and text box (except reminder) as well as articles like a, an and the.) (Thanks Flo00!)
LIMIT #184: Unleash the Dragon! Your card is or mentions Dragons. (Thanks Melono!)
LIMIT #185: I've got a rumbly in my tummy. Your card creates and/or interacts with Food tokens. (Thanks pernicious!)
LIMIT #186: That was Flint's treasure that we had come so far to seek. Your card creates and/or interacts with Treasure tokens. (Thanks pernicious!)
LIMIT #187: Your card incorporates a hobby of yours! (Thanks Flo00!)
LIMIT #188: Fear the blood. Your card creates and/or interacts with Blood tokens. (Thanks pernicious!)
LIMIT #189 Rules? I am the Rules!: Your card has a "rest of the game" effect (Thanks, Idea!)
LIMIT #190: 700 million years in the making: Your card has a prehistoric flavour (dinosaurs, cavemen, megafauna, primordial soup, etc.) (Thanks, collex!)
LIMIT #191: From marathon to horizon. Your card has a flavor derrived from long distance journeys. (Thanks melono!)

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