You can Ritual Summon this card with any "Nekroz" Ritual Spell Card. Must be Ritual Summoned, without using any Level 7 monsters, and cannot be Special Summoned by other ways. You can only use each of these effects of "Nekroz of Gungnir" once per turn. • During either player's turn: You can discard this card, then target 1 "Nekroz" monster you control; it cannot be destroyed by battle or by card effects this turn. • During either player's turn: You can discard 1 "Nekroz" card, then target 1 card on the field; destroy it.