If you control a DARK monster: You can Special Summon this card from your hand, also you cannot Special Summon monsters for the rest of this turn, except DARK monsters. If you control an Xyz Monster with a DARK Xyz Monster as material: You can target 1 Level 4 or lower "Raidraptor" monster in your GY; Special Summon it, but its effects are negated. You can only use each effect of "Raidraptor - Strangle Lanius" once per turn.