Rite of the Serpent
Sorcery (CMC 6)
Destroy target creature. If that creature had a +1/+1 counter on it, create a 1/1 green Snake creature token.
Decks with Rite of the Serpent
[KTK] Khans of Tarkir #86 (C)
[KTK] Khans of Tarkir #86y (C)
[MB1] Mystery Booster #757 (C)