Ordeal of Erebos (THS) #99 [EN/N]

{1}{B} · 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, target player discards two cards. · Illustrated by Tyler Jacobson · Theros #99 · EDHREC rank 22948 · Magic: The Gathering, MTG