Mauve Heavenly Crystal Dragon, Athora Tanzanite

■ This card's [Call Cost] is reduced by 4 gauge if you have used Overturn during this fight.

■ [Call Cost] [Put this on top of a size 3 《Prism Dragon》 on your field & Pay 4 gauge]

■ This card on the field cannot be destroyed and you cannot be dealt damage by card effects.

■ During your opponent's turn, when you cast a spell, deal 1 damage to your opponent!

■ Penetrate Triple Attack Counterattack Soulguard