CORI-EN089 * Mortilux Heruvur * Ultra Rare * Chaos Origins BLGG-EN116 If you control a monster

If you control a monster that is not a "Burning Abyss" monster

return it to the GY

Special Summon up to 2 "P

You can only use this effect of "Nightmare Apprentice" once per turn

CORI-EN089 * Mortilux Heruvur * Ultra Rare * Chaos Origins BLGG-EN116 If you control a monster2+ Level 8 monsters If a monster(s) is sent to your opponent's GY (except during the Damage Step): You can target 1 of them; attach it to this card. You can only use this effect of "Mortilux Heruvur" once per turn. This card gains effects based on the number of materials attached to it. 2+: Cannot be destroyed by battle or card effects. 3+: Your opponent cannot target cards in the GYs with card effects. 4+: You can detach 3 materials from this card;