Elves of Deep Shadow [Friday Night Magic 2006] Nightmare Demon {U}{U}{B}{B}: Target player loses X

{U}{U}{B}{B}: Target player loses X life and mills X cards

but you cannot activate the effect of that monster

Set: Core Set 2019 Type: Creature — Elf Scout Rarity: Uncommon Cost: {2}{G}{U} Flying

your opponent cannot activate cards or effects when you Normal or Special Summon a monster(s)

Elves of Deep Shadow [Friday Night Magic 2006] Nightmare Demon {U}{U}{B}{B}: Target player loses XSet: Friday Night Magic 2006 Type: Creature Elf Druid Rarity: Rare Cost: {G} {T}: Add {B}. Elves of Deep Shadow deals 1 damage to you. "They are aberrations who have turned on everything we hold sacred. Let them be cast out." Ailheen, Speaker of the Council