The new twist this common introduces is that if you discard a nonland card, youre going to deal two damage to each one of your opponents
But restricting the other abilities to zombies keeps it from having broad application
Rebbec, Architect of Ascension Rebbec, Architect of Ascension is an artificer that loves to build decks
When blocked by multiple creatures, an attacking creature can share its damage among multiple blockers - potentially defeating multiple blockers with a single attack
3 mana is a much bigger ask than 2, but its still a perfectly acceptable rate especially in a color starved for mana ramp options
Jeskai Flashback: Jeskai Flashback seems like it can be upgraded into a reasonable control deck, although it comes with a lot of risk: if your opponents play graveyard hate (and most experienced Commander players have learned that you should try to fit at least some into every deck), you could get locked out of the game altogether