whenever a card is exiled mtg Magic: the Gathering - Rhys The for as long as Assimilation Aegis remains attached to it Yidris, Maelstrom Wielder (C16) #50

Or you could just play cards like Ashling, the Extinguisher or Draugr Necromancer or Elusive Tormentor and get a 4/4 black creature for four mana with all upside and no drawbacks

Each Magic: The Gathering FINAL FANTASY Collector's Edition Commander deck contains the following: 1 Ready-to-play 100-card Commander deck 1 Surge foil face commander card 1 Surge foil featured commander card 98 Surge foil cards 10 Double-sided tokens Revival Trance, Limit Break, and Scions & Spellcraft Collector's Edition decks each contain 10 double-sided surge foil tokens

Exiling things is always nice, and making your opponent recast them does give you some nice tempo

When Anti-Venom enters, if he was cast, return target creature card from your graveyard to the battlefield