Rev, Tithe Extractor Modern Horizons 3 create a number of 1/1

create a number of 1/1 white Human Soldier creature tokens equal to its toughness

Its owner shuffles it into their library

Whenever a Mutant you control dies during your turn

and mana of any type can be spent to cast them

except it's a Bird in addition to its other types and it has flying

Rev, Tithe Extractor Modern Horizons 3 create a number of 1/1Whenever you attack, target creature gains deathtouch until end of turn. Whenever one or more creatures you control deal combat damage to a player, create a Treasure token, then look at the top card of that player's library and exile it face down. You may cast that card for as long as it remains exiled. (A Treasure token is an artifact with "{T}, Sacrifice this token: Add one mana of any color.")