Muddle the Mixture 2: Augstralian Kangafrog

Up: A pretty good drop in red artifact decks.

Rose, Daughter of Armageddon 
Legendary Creature - Dragon Plant Avatar
As an additional cost to cast this spell, sacrifice a creature
Flying
When Rose enters the battlefield, destroy all lands.
With her every wing flap, a fertile land turns to waste.
4/4

Next: Narset, Enlightened Master + Commander's Sphere

Up: Neat take on Commander’s Sphere. However, it reads very clunky. A workaround for calling out color identity twice could be to just tap for , , or .

Eldritch Bond
Enchantment
Whenever you gain life, target opponent exiles that many cards from their library.

Next: Sword of Kaldra + Blightsoil Druid

Up: Nice muddle. A 3/3 for three mana in black definitely shoudn't be , especially not with "super deathtouch". You might consider one of the following:
• Make it
• Make it 2/2 and
• Make it and

Hunting Party
Sorcery
Until end of turn, target creature gets +1/+1 for each green permanent you control. It must be blocked this turn if able.

Next: The Ozolith + Frogmite

Up: That’s super neat. I just hope it’s not broken.

Trinket Guardian
Artifact Creature — Gargoyle
Flying
Artifact tokens you control have indestructible.
5/5

Next: Arbor Elf + Phantasmal Sphere

dangerousdice: You can put mana in your post by putting “::”’s around a letter, so :;U:: becomes , and so on

Up: Fun build-around card. Nice way of mixing those two cards.

dangerousdice you might want to take a look at the Planeswalker's Guide to Posting Syntax. You can turn cardnames into links by writing them between [card][/card] or you can put the link directly with [url=...][/url] around the text.

Vitalizing Sphere
Creature - Illusion
Cumulative upkeep—Untap a tapped land you control. (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)
When Vitalizing Sphere leaves the battlefield, target opponent creates an X/X blue Orb creature token with flying, where X is the number of age counters on Vitalizing Sphere.
2/2

Works a bit like Braid of Fire. You have to be able to use your lands during upkeep. Also it explodes if you don't have enough lands.
I was thinking about making it 1/1 with +1/+1 for each age counter, but that was a bit too much text for one card.

Next: Roil Spout + Savai Triome

Up: Pretty powerful card, as is to be expected of a free sac outlet. The closest I could find in each tribe was Sling-Gang Lieutenant and Cautery Sliver. I don't actually know whether either of those gets run by their respective tribal decks but this is an upgrade of both.

Mirrored Surface 
Instant 
Gain control of target spell that targets only an artifact you control. You may choose new targets for it.

Next: Scion of Oona + Vine Kami

Up: Interpreting the Vine Kami as plant wall is an interesting way of thought. I didn#t think there would be many cards this cares about, but 13 isn't actually that bad. Official cards usually let the creratures with defender "attack as thou they didn't have defender." It has the additional benefit, that you can still activate your Portcullis Vine.

Science Fair Defenders
Creature - Human Guardian
When Science Fair Defenders enters the battlefield and at the beginning of your upkeep, roll a d8. On an 8, roll two more dice. On any other result, put the indicated counter on Science Fair Defenders:
1 — -1/-1
2 — Defender
3 — Vigilance
4 — Lifelink
5 — First strike
6 — Flying
7 — +1/+1
4/4

A d6 just didn't have enough modes to satisfy my needs. Note that I put lielink on 4, as a nod to gaining 4 ilfe. (Also it has 4 power.)

Next: Amplifire + Dawnhart Rejuvenator

Up: At first I thought this card was a bit of a bend because the random digging for a creature didn't feel green, but a quick scryfall search indicates that red and green get that sort of effect in about equal amounts.

Kobold High Priest
Creature - Kobold Cleric
Exile ~ and three other Kobolds you control: You may reveal a Dragon card you own from outside the game and put it into your hand.
1/2

Next: Erebos's Emissary and Aboroth

Not much to say on flavor here since neither card has much, and yours does mismatch a 'big beast' with 'something from Erebos'. Growing in power by discard a creature card which also fuels the cumulative upkeep was a clever idea, however, I do feel this card is a bit too strong on account of those initial stats. 6/6 for 3 is just too much without a much more serious drawback than that cumulative upkeep, especially when paying it increases those even further and it has trample on top, which I don't think this card should have as a mish-mash both because neither of the originals had it and also because it gives a much greater advantage to have those big stats that skews balance even further.

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Cards for next person:

Erstwhile Trooper

Die Young

Up: Nice change in the name and a good simple adaptation of the energy mechanic. Only complaint is that Trample isn't really monoB. Feels like it needed to stay GB.

Rakdos Gravefest
Enchantment
Whenever a Zombie you control attacks, it gets +2/+1 until end of turn.
Hellbent — As long as you have no cards in hand, if a Zombie you control would deal damage to a permanent or player, it deals double that damage to that permanent or player instead.

Next: Kjeldoran Guard + Titanoth Rex

Up: So it's a bodyguard in two possible different ways! Very neat muddle, though with the amount of things it can actually do I can't help but wonder it it'd need to be a rare for limited purposes since it can easily turn any random mana dork into your next game ending threat.

Lightmine Guardian
Creature - Elemental
Whenever one or more creatures would be dealt damage for the first time each turn, that damage is dealt to ~ instead.
, : Remove X damage marked on ~. It deals damage equal to the amounted of damage removed this way to target tapped creature you don't control. Activate only once each turn.
2/6

Next: Canoptek Wraith and Circle of the Moon Druid

Was kinda difficult to make something out of the two boring commons. But i tried my best.
Next: Verdurous Gearhulk + Sapphire Charm 
Good luck  

Up: Neat creature that feels like a great blend of the two creatures in the prompt. Metalcraft becomes more important (for it to even be around as opposed to just flying) but once you reach that threshold it remains in play. Appropriate even to being common.



Next: Exquisite Blood + Purraj of Urborg

Edit: Lol, took too long on the art and got beat. Ignore my post I guess.