
Put a +1/+1 counter on target creature you control, then each modified creature you control deals damage equal to its power to target creature you don't control. (Equipment, Auras you control, and counters are modifications.)
Signature Slam has 1 printing, first in Modern Horizons 3 (2024). EDHREC ranks it #7,974 among Commander cards. It appears most in Kibo, Uktabi Prince decks (4,852 on EDHREC). It has 5 official rulings.
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.