
Target creature's owner puts it on their choice of the top or bottom of their library. 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.")
Return to the Sewers has 1 printing, first in Teenage Mutant Ninja Turtles (2026). EDHREC ranks it #21,300 among Commander cards. It appears most in Mikey & Don, Party Planners decks (164 on EDHREC). It has 2 official rulings.
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.