Whenever he or another of your creatures dies, you can grab a creature with lower toughness from your graveyard and add it to your hand
and the Brook card from Paramount War [OP-02] which when played, enables the player to play any Film or Straw Hat Crew Character card with a cost of 3 or less from the players hand
One other advantage to Omenspeaker, I suppose, is the synergy with Mirror Mockery
Alchemists Gambit Im a huge fan of Alchemist's Gambit as long as you maintain the philosophy that its a 7-mana cleave spell that costs 3 on rare occasions
That was the underlying point of my article on modal cards in Commander, and with that in mind, Overcharged Amalgam is set to be one of the best spells for Commander from recent sets
Call of the Wild While its somewhat random, Call of the Wild turns your top deck into a cheat engine, letting you pay to potentially flip huge creatures into play