Can not be Normal Summoned/Set. Must be Special Summoned by its own effect, and can not be Special Summoned by other ways. If "The Winged Dragon of Ra" is sent from the field to your GY while this card is in your GY: Special Summon this card. Cards and effects can not be activated in this activation. This card is unaffected by other cards' effects. You can pay 1000 LP; send 1 monster on the field to the GY. Once per turn, during the End Phase: Send this card to the GY, and if you do, Special Summon 1 " The Winged Dragon of Ra - Sphere Mode" from your hand, Deck, or GY, ignoring its Summoning conditions.