You can Ritual Summon this card with any Nekroz Ritual Spell Card. Must be Ritual Summoned, without using any Level 8 monsters, and cannot be Special Summoned by other ways. You can only use each of these effects of Nekroz of Valkyrus once per turn.
• When an opponent s monster declares an attack: You can banish 1 Nekroz card from your Graveyard, then discard this card; negate that attack, then end the Battle Phase.
• During your Main Phase: You can Tribute up to 2 monsters from your hand and or your side of the field, and if you do, draw 1 card for each card Tributed.