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 this card and 1 "Nekroz" Spell Card; your opponent cannot Special Summon monsters 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 Graveyards. You cannot Normal Summon/Set or Special Summon other monsters the turn you activate this effect.