Berserk [Alpha Edition] Labyrinth of Nightmare but Its effect is negated

but Its effect is negated until the End Phase

" —Mayael the Anima

Set: Commander 2014 Type: Creature — Spirit Rarity: Rare Cost: {3}{B} Extort (Whenever you cast a spell

Set: HeartGold & SoulSilver: Base Set Type: Fighting Rarity: Ultra Rare Retreat cost: Colorless

Set: Portal Demo Game Type: Creature — Pegasus Rarity: Common Cost: {1}{W} Flying

Berserk [Alpha Edition] Labyrinth of Nightmare but Its effect is negatedSet: Alpha 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.