Rev, Tithe Extractor Modern Horizons 3 and mana of any type

and mana of any type can be spent to cast them

Whenever a Mutant you control dies during your turn

its owner creates a tapped 1/1 white Soldier creature token for each quest counter on it

Its owner shuffles it into their library

Rev, Tithe Extractor Modern Horizons 3 and mana of any typeWhenever 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.")