Enchant creature you control Enchanted creature gets +1/+1. Whenever enchanted creature deals combat damage to a player, you may sacrifice Mortal Obstinacy. If you do, destroy target enchantment.
2014-04-26
If another player gains control of the enchanted creature, Mortal Obstinacy will be put into its owner's graveyard.
2014-04-26
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.