Skeletonize deals 3 damage to target creature. When a creature dealt damage this way dies this turn, put a 1/1 black Skeleton creature token onto the battlefield with ": Regenerate this creature."
Fire burns away both flesh and freedom.
Official Rulings for Skeletonize
10/1/2008 : Each time a creature is put into a graveyard from the battlefield, check whether Skeletonize had dealt damage to it during that turn. If so, Skeletonize's delayed triggered ability will trigger.
10/1/2008 : You get the token, regardless of who controlled the creature or whose graveyard it was put into.