
Whenever a player casts an artifact, instant, or sorcery spell, you create a Mutagen token. (It's an artifact with "{1}, {T}, Sacrifice this token: Put a +1/+1 counter on target creature. Activate only as a sorcery.")
April O'Neil, Human Element has 1 printing, first in Teenage Mutant Ninja Turtles Eternal (2026). EDHREC ranks it #11,974 among Commander cards. It appears most in Urza, Lord High Artificer decks (1,115 on EDHREC). It has 3 official rulings.
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.