Let the Galaxy Burn [Universes Beyond: Warhammer 40,000] Leviathan Horror it deals damage to target

it deals damage to target creature an opponent controls equal to the number of Goblins you control

Then C=v(a²+b²)

Set: Commander 2011 Type: Legendary Creature — Giant Warrior Rarity: Mythic Cost: {1}{U}{R}{W} At the beginning of combat on your turn

Set: Unhinged Type: Creature — Donkey Zombie Rarity: Common Cost: {2}{B}{B} {1}{B}

Let the Galaxy Burn [Universes Beyond: Warhammer 40,000] Leviathan Horror it deals damage to targetSet: Universes Beyond: Warhammer 40,000 Type: Sorcery Rarity: Rare Cost: {X}{5}{R} Cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom of your library in a random order.) Let the Galaxy Burn deals X plus 2 damage to each creature that didn't enter the battlefield this turn.