
As this enchantment enters, choose a creature type.
Creatures you control are the chosen type in addition to their other types. The same is true for creature spells you control and creature cards you own that aren't on the battlefield.
Arcane Adaptation has 4 printings, first in Ixalan (2017). EDHREC ranks it #4,009 among Commander cards. It appears most in Yuriko, the Tiger's Shadow decks (6,484 on EDHREC). 1 public deck on TCG runs it. It has 2 official rulings.
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.