Crackling Doom [Khans of Tarkir Prerelease Promos] Merfolk Warrior but its emerald bones remain

but its emerald bones remain as a tribute to the forest

defending player loses 4 life

Whenever Scourge of Valkas or another Dragon enters the battlefield under your control

sacrifice Phantasmal Forces unless you pay {U}

Set: Zendikar Type: Basic Land — Mountain Rarity: Common ({T}: Add {R}

Crackling Doom [Khans of Tarkir Prerelease Promos] Merfolk Warrior but its emerald bones remainSet: Khans of Tarkir Prerelease Promos Type: Instant Rarity: Rare Cost: {R}{W}{B} Crackling Doom deals 2 damage to each opponent. Each opponent sacrifices a creature with the greatest power among creatures that player controls. Do not fear the lightning. Fear the one it obeys.