Diabolic Servitude [Commander Anthology] Nightmare Demon At the beginning of each

At the beginning of each upkeep

Although long since dead

Set: Darksteel Type: Creature — Wurm Rarity: Rare Cost: {5}{G}{G} Whenever Roaring Slagwurm attacks

you may have two target players exchange life totals

" —The Northern Paladin

Diabolic Servitude [Commander Anthology] Nightmare Demon At the beginning of eachSet: Commander Anthology Type: Enchantment Rarity: Uncommon Cost: {3}{B} When Diabolic Servitude enters the battlefield, return target creature card from your graveyard to the battlefield. When the creature put onto the battlefield with Diabolic Servitude dies, exile it and return Diabolic Servitude to its owner's hand. When Diabolic Servitude leaves the battlefield, exile the creature put onto the battlefield with Diabolic Servitude.