Ordeal of Heliod
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, you gain 10 life.
Printings & Conditions (2)
Masters 25 (A25)(Masters 25)#27Uncommon
Theros (THS)(Theros)#25Uncommon