You can Ritual Summon this card with "Silenforcing Prayer". Gains 2050 ATK while "Novox, the Silenforcer Disciple" is on your field or in your GY. You can only use each of the following effects of "Skull Guardian, the Silenforcing Protector" once per turn. If this card is Ritual Summoned: You can add 1 "Silenforc" monster, or 1 Warrior or Dragon Ritual Monster, from your Deck to your hand. When your opponent activates a card or effect while you control "Novox, the Silenforcer Disciple" (Quick Effect): You can negate the activation, and if you do, destroy that card.