Land
~this~ enters the battlefield tapped.
T: add 1 to your mana pool

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G
Creature - Human Shaman (1/1)
At the beginning of your upkeep, you may Discard a card. If you don't, put a +1/+1 counter on ~this~
Tap an untapped permanent you control, remove any number of +1/+1 counters from ~this~: add that many green mana to your mana pool.

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(U/B)(U/B)
Artifact
At the beginning of each player's upkeep, ~this~ is a enchantment in addition to its other types until end of turn and up to one target artifacts are 2/2 creatures in addition to their other types until end of turn
Imprint — Whenever one or more Myrs are put into a graveyard from the battlefield, exile target nontoken creature. (The exiled card is imprinted on this artifact.)
creatures that share a creature type with the imprinted card can't be blocked except by Golems

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AlexChurchill/MagicCardGenerator