Ordeal of Thassa (THS) #58 [EN/N]

{1}{U} · 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, draw two cards. · Illustrated by Howard Lyon · Theros #58 · EDHREC rank 15770 · Magic: The Gathering, MTG