Defense of the Heart [Mystery Booster] 226 it becomes an Aura with

it becomes an Aura with "enchant creature put onto the battlefield with Necromancy

Set: Black & White: Boundaries Crossed Type: Item Rarity: Rare Ace

Set: POP Series 3 Type: Grass Rarity: Common Retreat cost: Colorless

All are prey to the eyes of the wild

Set: EX: Dragon Frontiers Type: Water Rarity: Uncommon Retreat cost: Colorless

Defense of the Heart [Mystery Booster] 226 it becomes an Aura withSet: Mystery Booster Type: Enchantment Rarity: Rare Cost: {3}{G} At the beginning of your upkeep, if an opponent controls three or more creatures, sacrifice Defense of the Heart, search your library for up to two creature cards, put those cards onto the battlefield, then shuffle.