Owner of the Chaos orb

{10}{t}: deal 10 damage to target creature, planeswalker, or player.
{10}{ut}: heal target player 5
{10}{10}{x}{t}: toss {x} cards into the air. They must each flip at least once. Anything the cards touch gets destroyed. If they hit a player or their life counter, that player takes 5 damage. If they hit a deck or discard pile, exile the top 10 cards on the hit pile.