Challenge Slots

{Spoiler}
viriss : Council of Daggers is an interesting card. However, I feel like the problem with the mechanic (not the card) is that I can’t really tell what it does. It feels like a normal card - not one that should have whatever ability word tacked on to it. The card by itself is really good, though.

Jartis : Wizard’s Study seems very unfun. In the matchups where the card's first two abilities work, they completely negate certain strategies - and is unanswerable against a blue deck. Furthermore, enchantments shouldn’t tap, as a rule.

melono : I feel like the one problem I have with Hopspeed Hare is that the ability feels like it wouldn’t be good to have on a lot of cards as a mechanic. I do like the card, though.

gluestick248 : Infuse is back! I like Generous Genie is a good design because of it's simplicity, but you're missing a rarity. Nice card!

Fermat : Paean of the Evergreen Thistle is one of my favorite designs in the contest, due to the flavorful nature of the Fealty keyword, which is also very interesting, but your card can be countered, so I don't think I can count it. (Since the ability only works when it's on the battlefield, the passive "creatures can't be countered" doesn't apply when Paean is on the stack.)

Flo00 : Life's Embrace feels like it could be interesting, but without a flavorful tie between the abilities, the different parts of the card feel like they have no connection. I also think the Ersatz part of the card is way, way too overcosted.

haardrade : Leviathan Fisher is an interesting concept for a card, and I like the ability Colossal. I feel like it should say colossal, not colossal 6 and just care about the number 6 inherently as part of the keyword, and also CMC isn't a term you can use on actual cards, it's just player shorthand.

augur : Witness to Majesty is a card that I think flavorfully works really well, and seems like it would be fun to play. The second ability calls to Eternal Witness, and the first ability works as a mechanic really well.

@digiman: Aspect of Solitude is flavorfully interesting, and I like metamorphosis as a play on normal DFC cards.

{Spoiler}
Third place goes to @digiman, second place goes to viriss , and first place goes to augur ! Congrats to our winners and everyone who participated!

{Spoiler}

Bonecarver 
Creature - Human Pirate 
Deathtouch
Whenever a creature dealt damage by ~ this turn is put into a graveyard from the battlefield, exile it instead. Then create a colorless Treasure artifact token with ", Sacrifice this artifact: Add one mana of any color to your mana pool."
Treated properly, a bone can become the most precious of stones.
1/2

Restless Grave
Creature - Zombie
Defender
Whenever ~ blocks a creature, you may sacrifice ~. If you do, you may put target creature card from your graveyard onto the battlefield blocking that creature.
0/3

Shambling Assassin
Creature - Zombie Assassin
When ~ enters the battlefield, put a -1/-1 counter on target creature an opponent controls.
Whenever a creature an opponent controls with a -1/-1 counter on it dies, you may exile ~ from your graveyard. If you do, add to your mana pool.
Paid at last.
2/2

{gluestick248}

The Necromancer’s first ability can be quite potent, but it itself is a two-mana dork which likely balances out. I like the idea of the last ability, but I think it’s also out-of-color (more BW than BG) and also poorly timed, as you can use it after damage has been dealt as long as an attacker survived- and can also reanimate an opponent’s attacker that died in combat.

{melono}

The cost seems a little high/the stats low, as you can only take advantage of the mana with instants or the occasional activated ability (notably activated abilities that pump creatures/grant keywords don’t synergize). It’s also quite difficult to use in limited outside of a deck that can get lands into the graveyard, and the payoff isn’t that great.

{viriss}

Took me a moment to parse how this fulfilled limit 80, almost flagged it as invalid /sweat
On the card itself- a potentially powerful mana generator, but just dropping it T3 won’t be as large of a gain as getting 7 mana or something lategame. I dislike how it scales early- you get maybe a 3 mana rock that quickly becomes 1 mana or even 0 within a few turns, but if the graveyards are stacked late you can get a lot of mana and the downside won’t be very relevant. I do like how it plays early game in multiplayer, since it grows easier but can also shrink faster.

{gateways7}

I’m wary of the power level in limited, as drawing a card T6 on can be quite good in long games, especially when the draw engine can potentially serve as an enabler for the rest of your deck in an environment with selfmill. I like the choice it presents to your opponent, since the advantage you get scales with how much they deal.

{Fermat}

I think you would still keep the mana through your next turn with that set of clauses? I would rather it be that you lose it at the end of your turn or something to prevent having to track the amount of G you have across multiple turns. I like the idea of a wall that’s also a dork with a growing ability to keep it relevant lategame, but as-is it also serves as a Scavenging Ooze-esque effect- blanking cards that have relevance in graveyards- but without the cost of Scooze, meaning you can hit as many cards as you like.
(also the cost for the ability should be “a card” not “target card”)

{Yoshi}

Like I mentioned, this is invalid bc it doesn’t add mana to your mana pool as specified by limit 59.
I like both the after combat use of this card and the synergy with life payment effects (plus the damper on the life payment synergy with the inherent difficulties of reanimation). Without the vampire flavor, though, I would have pegged the effect as mono-white, and definitely more gold WB than hybrid WB.

{Jartis}

I like the trigger overall. The first one will be useful on occasion, but most of the power comes from the second mode since it’s a chump block and potential kill as well as potential value from triggers. I would prefer it if the last ability exiled the creature if it would leave the battlefield, both to lessen exploitation of etb/ltb triggers and to make what to reanimate a more difficult decision. The stats fit well for the cost/ability as well.
(btw I think the correct wording for the last ability would be “whenever you are attacked by one or more creatures” or something more similar to viriss’s card, as this would create priority in the declare blockers step before blockers are declared)

{Flo00}

An interesting way to turn your graveyard into a resource. It’s certainly versatile, as it can be a straight 10 life prevention or a slow value engine. I’m worried that the value engine mode may be a little much, since having damage prevention to spare at instant speed helps immensely in combat. That being said, it’s a four mana enchantment and it’s very possible to run out of cards in grave.

{kinotherapy}

There’s a lot of restrictions required to make this worthwhile- you have to have the mana up, have to have the cards in grave, and they have to not be able to pay. The set of spells that this can hit is pretty small as well, being mostly burn and discard, or stuff that targets you incidentally. (plus you’re playing an etb tapped land) At the same time, just taxing a spell can sometimes be enough to make it a good inclusion, but it’s not an autoinclude- a good spot for a land.

{Winner}
The winner is Jartis!
Runnerups are gateways7 and kinotherapy!