If this card is in your GY: You can Tribute 1 monster; Special Summon this card, then your opponent can Special Summon 1 monster from their GY, but negate its effects. If this card is Special Summoned: You can target 1 Level 4 or lower "Ogdoadic" monster in your GY; Special Summon it, but banish it when it leaves the field. You can only use each effect of "Keurse, the Ogdoadic Light" once per turn.