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.

Illustrated by Lucas Graciano

Theros (THS)

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