Sunstone [Ice Age] Legendary Creature If Cosmic Horror is destroyed

If Cosmic Horror is destroyed this way

Set: Planar Chaos Type: Sorcery Rarity: Rare Cost: {2}{B}{B} Destroy all creatures

Set: Unlimited Edition Type: Instant Rarity: Rare Cost: {G} Look at the top three cards of target player's library

Set: Fifth Dawn Type: Artifact Rarity: Rare Cost: {2} {3}

Set: San Diego Comic-Con 2014 Type: Legendary Planeswalker — Nissa Rarity: Mythic Cost: {3}{G}{G} +1: Target land you control becomes a 4/4 Elemental creature with trample

Sunstone [Ice Age] Legendary Creature If Cosmic Horror is destroyedSet: Ice Age Type: Artifact Rarity: Uncommon Cost: {3} {2}, Sacrifice a snow land: Prevent all combat damage that would be dealt this turn. "I dispute Relicbane's hysterical allegations, Commissioner, but it is true that these artifacts can be dangerous." Arcum Dagsson, Soldevi Machinist