Cthuga, God of Redsky

Menace, Vigilance
Whenever you cast an Enchantment spell you
may deal damage equal to it's converted mana cost to any target.
{4}: Cthuga, God of Redsky deals 10 damage to each creature, player, and planeswalker. Cthuga, God of Redsky can not return to the Command Zone for the remainder of the game.