Land
T: add G to your mana pool
All enchantments are Mountain lands in addition to their other types
All creatures with power X or more, where X is the number of basic land types among lands you control gain ''When ~this~ leaves the battlefield, regenerate target green creature and regenerate that creature''
GGG: regenerate all creatures with power 4 or more
4G: destroy target tapped land
T: target opponent may search his or her library for a land card, reveal it, and put it into his or her hand. If that player does, that player shuffles that library afterwards.

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3GG
Creature - Beast (2/1)
Morph X white mana, where X is the number of Arcane spells cast this turn
3: target player puts a 4/4 green Beast creature token onto the battlefield
Whenever a creature is put into a graveyard from the battlefield, put a +1/+1 counter on ~this~
T: put a +1/+1 counter on ~this~
2, Sacrifice a land, remove any number of +1/+1 counters from ~this~: put that many 1/1 green Snake creature tokens onto the battlefield

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4R
Creature - Human Shaman (1/2)
Whenever an opponent casts a Beast spell, destroy target artifact
2R: target facedown creature gains ''When ~this~ is exiled, destroy target artifact'' until end of turn
4(R/G)(R/G), T: add 3 to your mana pool for each creature on the battlefield

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AlexChurchill/MagicCardGenerator