You can Ritual Summon this card with any "Nekroz" Ritual Spell. Must be Ritual Summoned without using any Level 9 monsters, and can not be Special Summoned by other ways. You can only use each of these effects of "Nekroz of Trishula" once per turn.
• During the player's turn, when a card or effect is activated that targets a "Nekroz" monster(s) you control: You can discard this card; negate the activation.
• When this card is Ritual Summoned, you can: Banish exactly 3 of your opponent's cards, 1 each from their hand, field, and GY. (The card in the hand is chosen at random.)