Kuja, Genome Sorcerer Making little black Wizards who ping on casting is useful, and provides Kuja with a spot in spellslinger commander decks,and when transformed, they can turn it into a quick kill condition
Slam down some Eldrazi titans to annihilate your opponents, or harvest their fear with Valgavoth, Terror Eater
Most are playable with a couple of 2 bodies at three mana and a couple more three bodies at four mana
This both enhances the Zombie player's board state and nullifies an opponent's graveyard-based effects, such as reanimating a huge threat
For this breakdown however you will not be able to do that at all
Forcing interaction amongst your opponents while generating you mana and forcing the player to draw a card sounds like a really, really weird way to force an opponent to mill themselves out of the game, if you had a way to endlessly tap and untap Red Death and had legal targets