Megumin, Explosive

Haste
{x}{r}{p/r}, {t}: Megumin, Explosive deals X damage
to all other players and permanents they control.
{x}{b}{r}{p/r}, {t}: Destroy each artifact with
converted mana cost X or less.
{x}{w}{b}{r}{p/r}, {t}: Destroy each Enchantment with
converted mana cost X or less.
EXPLOSION!