You can Ritual Summon this card with any "Nekroz" Ritual Spell. Must be Ritual Summoned, using 3 monsters you control with different Types. During the Main Phase 1 (Quick Effect): You can discard this card and 1 "Nekroz" Spell; your opponent cannot Special Summon from the Extra Deck during this phase. When this card is Ritual Summoned: You can banish all other cards on the field and in the GYs. You cannot Normal Summon/Set or Special Summon other monsters the turn you activate this effect.