Chaos Emperor Dragon - Envoy of the End [JUMP-EN086] Ultra Rare Fairy and if the detached material

and if the detached material was a "Galaxy" card

during your Standby Phase you can return 1 "Elemental Hero" or "Destiny Hero" monster from your side of the field or your Graveyard to it's owners hand

until the end of the Damage Step

then if this card was Set before activation and is on the field at resolution

Chaos Emperor Dragon - Envoy of the End [JUMP-EN086] Ultra Rare Fairy and if the detached materialSet: Shonen Jump Magazine Promos Card type: Effect Monster Rarity: Ultra Rare Attack: 3000 Defense: 2500 Cannot be Normal Summoned Set. Must be Special Summoned (from your hand) by banishing 1 LIGHT and 1 DARK monster from your GY. Once per turn: You can pay 1000 LP; send as many cards in both players' hands and on the field as possible to the GY, then inflict 300 damage to your opponent for each card sent to the opponent's GY by this effect. You