In a deck built to profit from discards, Dark Deal is quietly one of the strongest options
The set had eight major creature types (Elementals, Elves, Faeries, Giants, Goblins, Kithkin, Merfolk, and Treefolk), and the majority of creatures in the block were one of those types
However, the world rule delineates that only the newest world enchantment that was played will remain in play, no matter what the others name is
Pokmon cards have quite a bit of value
Bloodline Bidding could be your go-to card
This version of Yargle is superior to the mono-black one, since green gives you access to ramp for your 6-mana commander or for some pricier equipment, plus you get additional combat tricks like Giant Growth and green auras