You can Ritual Summon this card with any "Nekroz" Ritual Spell. Must be Ritual Summoned, without using any Level 10 monsters. You can only use each of the following effects of "Nekroz of Areadbhair" once per turn. You can discard this card; Tribute up to 2 "Nekroz" monsters from your hand and/or field, and if you do, send the same number of "Nekroz" cards from your Deck to the GY. When a monster effect is activated (Quick Effect): You can Tribute 1 monster from your hand or field; negate the activation, and if you do, banish that card.