Soul of the Cursed

All opponents creatures lose Undead and Undeath. If an opponents creature became undead (Due to the Undead ability) it's put into their owner's graveyard. Creatures you control have Undead(If this creature isn't undead yet , the next time it's put into a graveyard from anywhere instead put it onto the battlefield with a base power and toughness of 2 and it becomes undead)
"The curse lies within all, but whom it's brought out in is our choice," Dracon, Retkar Destroyer