You can send 1 Divine-Beast monster from your hand to the GY; add 1 "Monster Reborn" from your Deck or GY to your hand. You can send this face-up card to the GY; this turn, you can Special Summon "The Winged Dragon of Ra" from your GY with "Monster Reborn", ignoring its Summoning conditions. During the End Phase of the turn this effect was activated, you must send "The Winged Dragon of Ra" you control that was Special Summoned with "Monster Reborn" to the GY. You can only use each effect of "Millennium Revelation" once per turn.