Mega Charizard-Y Dragon

Flying, haste
{7}: Air Slash — Deals 10 damage to
target creature or target player.
{2}{r}{r}: Crimson Dive — Destroy target creature. It can't be regenerated.
{6}{r}{r}{r}: Crimson Storm GX — Destroy all opponents creatures. They discard ten cards from their top library. (Z-Move)