WEBUmori, the Collector. One of the Companions of old, Umori, is a perfectly good Commander in its own right. If your deck is full of the same type of card (like a Slime Against Humanity, for example), then you get a discount on casting. Going all creature Ooze is the easy path, of course, but with the new Ooze sorcery from MKM, you could play a ...