Defense of the Heart [Urza's Legacy] Lightning[-20] Destroy all Attack Position monsters

Destroy all Attack Position monsters on your opponent's side of the field

remove all mire counters from a land that a mire counter was put onto with Cyclopean Tomb but that a mire counter has not been removed from with Cyclopean Tomb

or Summoned monster

Set: Magician's Force Card type: Effect Monster Rarity: Ultra Rare Attack: 1900 Defense: 1200 This monster can only be Ritual Summoned with the Ritual Spell Card

Set: Limited Edition Alpha Type: Creature — Wall Rarity: Uncommon Cost: {3}{W} Defender (This creature can't attack

Defense of the Heart [Urza's Legacy] Lightning[-20] Destroy all Attack Position monstersSet: Urza's Legacy 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, and put those cards onto the battlefield. Then shuffle your library.