Enduring Tenacity

Mana Cost: {2}{B}{B}
Total Cost: 4
Type: Enchantment Creature — Snake Glimmer
Description: Whenever you gain life, target opponent loses that much life.
When Enduring Tenacity dies, if it was a creature, return it to the battlefield under its owner’s control. It’s an enchantment. (It’s not a creature.)
Power: 4
Toughness: 3
Colors: B