Yidris, Maelstrom Wielder [Commander 2016]

Set: Commander 2016 Type: Legendary Creature — Ogre Wizard Rarity: Mythic Cost: {U}{B}{R}{G} TrampleWhenever Yidris, Maelstrom Wielder deals combat damage to a player, as you cast spells from your hand this turn, they gain cascade. (When you cast the 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.)