Chaos Emperor Dragon - Envoy of the End [DPKB-EN016] Ultimate Rare Shonen Jump Magazine Promos then if this card was

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

Set: Soul Fusion Card type: Fusion/Effect Monster Rarity: Secret Rare Attack: 2600 Defense: 2400 "Thunder Dragon" + 1 Thunder monster Must be either Fusion Summoned

An Xyz Monster whose original Type is Beast-Warrior and has this card as material gains this effect

you can return all Dragon-Type Monsters from your Graveyard to your Deck

At the beginning of your action phase

Chaos Emperor Dragon - Envoy of the End [DPKB-EN016] Ultimate Rare Shonen Jump Magazine Promos then if this card wasSet: Duelist Pack: Kaiba Card type: Effect Monster Rarity: Ultimate Rare Attack: 3000 Defense: 2500 This card cannot be Normal Summoned or Set. This card can only be Special Summoned by removing from play 1 LIGHT and 1 DARK monster in your Graveyard. You can pay 1000 Life Points to send all cards in both players' hands and on the field to the Graveyard. Inflict 300 damage to your opponent for each card sent to the Graveyard by this effect.