Mortal Obstinacy
From Journey into Nyx set
Mortal Obstinacy
Enchantment — Aura
Enchant creature you control
Enchanted creature gets +1/+1.
Whenever enchanted creature deals combat damage to a player, you may sacrifice this Aura. If you do, destroy target enchantment.
Rulings
- You decide whether to sacrifice Mortal Obstinacy as its triggered ability resolves. If it's not on the battlefield at that time, you can't sacrifice it and destroy the target enchantment.
- If another player gains control of the enchanted creature, Mortal Obstinacy will be put into its owner's graveyard.