Berserk [Collectors' Edition] Human Soldier Assassin Whenever you cast a Merfolk

Whenever you cast a Merfolk spell

Set: Amonkhet Invocations Type: Instant — Arcane Rarity: Mythic Cost: {4}{R} You may put a creature card from your hand onto the battlefield

sacrifice Pirate Ship

Set: Friday Night Magic 2009 Type: Creature — Elemental Rarity: Rare Cost: {4}{U} Flying

Set: Alpha Edition Type: Creature — Cat Rarity: Rare Cost: {W} The traditional kings of the jungle command a healthy respect in other climates as well

Berserk [Collectors' Edition] Human Soldier Assassin Whenever you cast a MerfolkSet: Collectors' Edition Type: Instant Rarity: Uncommon Cost: {G} Cast this spell only before the combat damage step. Target creature gains trample and gets +X +0 until end of turn, where X is its power. At the beginning of the next end step, destroy that creature if it attacked this turn.