You can Ritual Summon this card with any "Nekroz" Ritual Spell Card. Must be Ritual Summoned from your hand by using 3 monsters you control with different Types, and cannot be Special Summoned by other ways. During either player's Main Phase 1: You can discard both this card and 1 "Nekroz" Spell Card; during this phase, your opponent cannot Special Summon from the Extra Deck. When this card is Ritual Summoned: You can banish all other cards on the field and in the Graveyards. You cannot Normal/Set or Special Summon other monsters the turn you activate this effect.