Dialga (XY77) [XY: Black Star Promos] 55a Set: Return of the Duelist

Set: Return of the Duelist Card type: Xyz/Effect Monster Rarity: Ultimate Rare Attack: 2400 Defense: 2000 3 Level 4 monsters Once per turn

destroy cards your opponent controls

) You can only use each effect of "Crystron Halqifibrax" once per turn

or if this card in your possession is destroyed by an opponent's card effect and sent to your Graveyard: You can Special Summon 1 "Gaia The Fierce Knight" monster from your hand

You can only use each of the following effects of "DoSolfachord Coolia" once per turn

Dialga (XY77) [XY: Black Star Promos] 55a Set: Return of the DuelistSet: XY: Black Star Promos Type: Metal Rarity: Promo Retreat cost: Colorless,Colorless,Colorless