
Return target nonland permanent to its owner's hand. If that permanent had mana value 3 or less, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
Serum Snare has 1 printing, first in Phyrexia: All Will Be One (2023). EDHREC ranks it #4,629 among Commander cards. It appears most in Atraxa, Praetors' Voice decks (3,669 on EDHREC). It has 6 official rulings.
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.