Nekroz of Sophia
You can Ritual Summon this card with any Nekroz Ritual Spell Card. Must be Ritual Summoned from your hand by using 3 monsters with different Types you control, and cannot be Special Summoned by other ways. (1) 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. (2) When this card is Ritual Summoned: You can banish all other cards on the field and in both Graveyards. During the turn you activate this effect, you cannot Normal or Special Summon other monsters.
This brings us hope about El Shaddoll Sophia.