Juzam Djinn The problem with the value in Juzam is that it's really only valuable with old-school players and has this iconic class
They show up less often in booster packs than rares, uncommons, or commons, and that scarcity is intentional
Those are all interesting, but if you roll a natural 20, you get to search your library for a card of your choice and then put it into play if its an artifact, or in your hand if its anything else
Target creature gains haste until end of turn
Once your demons land, they quickly take control with their huge stats, removal effects, and tutoring abilities
The nice part of Will is that he reduces the cost of spells with X in their casting cost too, letting you commit extra mana to those spells without actually having to have the mana for it