Mortilux Heruvur

2+ 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; send 1 monster on the field to the GY.