
Whenever this creature deals combat damage to a creature, that creature becomes a copy of this creature.
Permeating Mass has 3 printings, first in Eldritch Moon (2016). EDHREC ranks it #18,450 among Commander cards. It appears most in Oviya Pashiri, Sage Lifecrafter decks (156 on EDHREC). It has 5 official rulings.
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.