Magic 2011

Necrotic Plague

Enchant creature
Enchanted creature has "At the beginning of your upkeep, sacrifice this creature."
When enchanted creature is put into a graveyard, its controller chooses target creature one of his or her opponents controls. Return Necrotic Plague from its owner's graveyard to the battlefield attached to that creature.

Enchant creature
Enchanted creature has "At the beginning of your upkeep, sacrifice this creature."
When enchanted creature dies, its controller chooses target creature one of their opponents controls. Return Necrotic Plague from its owner's graveyard to the battlefield attached to that creature.