4fd932d3_onsters___Yu_Gi_Oh__Card_Guide__Card_Text
[Card Name] Nekroz of Valkyrus [Type] Ritual/Effect Monster [Attribute] WATER [Sub Type] Spellcaster [ATK] 2900 [DEF] 1700 [Card Text] 
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 and discard this card; negate the 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 the same number of cards you Tributed.
Yu-Gi-Oh! Level 8 Monsters - Yu-Gi-Oh! Card Guide
Card Text