Imminent Doom [Hour of Devastation]

Set: Hour of Devastation Type: Enchantment Rarity: Rare Cost: {2}{R} Imminent Doom enters the battlefield with a doom counter on it.Whenever you cast a spell with mana value equal to the number of doom counters on Imminent Doom, Imminent Doom deals that much damage to any target. Then put a doom counter on Imminent Doom.