Ordeal of Purphoros
Enchantment — Aura
Enchant creature
Whenever enchanted creature attacks, put a +1/+1 counter on it. Then if it has three or more +1/+1 counters on it, sacrifice this Aura.
When you sacrifice this Aura, it deals 3 damage to any target.
Printings & Conditions (3)
Duel Decks: Heroes vs. Monsters (DDL)(Duel Decks: Heroes vs Monsters)#23Uncommon
Jumpstart 2022 (J22)(Jumpstart 2022)#577Uncommon
Theros (THS)(Theros)#131Uncommon