Xurkitree GX (SM68) [Sun & Moon: Black Star Promos] Dark you cannot declare an attack

you cannot declare an attack this turn

Set: OTS Tournament Pack 1 Card type: Fusion/Effect Monster Rarity: Ultimate Rare Attack: 2400 Defense: 1800 Must be Special Summoned with "Mask Change" and cannot be Special Summoned by other ways

Set: Shadows in Valhalla Card type: Quick Play Spell Rarity: Secret Rare Neither player can activate cards or effects in response to this card's activation

This card cannot be Special Summoned except by paying 500 Life Points when both "Andro Sphinx" and "Spinx Teleia" on your side of the field are destroyed at the same time

during the Damage Step only

Xurkitree GX (SM68) [Sun & Moon: Black Star Promos] Dark you cannot declare an attackSet: Sun & Moon: Black Star Promos Type: Lightning Rarity: Black Star Promo Retreat cost: Colorless,Colorless