
At the beginning of combat on your turn, put X +1/+1 counters on each creature you control, where X is this creature's power.
Ouroboroid has 4 printings, first in Edge of Eternities (2025). EDHREC ranks it #1,493 among Commander cards. It appears most in Tidus, Yuna's Guardian decks (4,983 on EDHREC). It has 2 official rulings.
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.