Big Shield Gardna [DB1-EN097] Ultra Rare Legendary Collection 2 You can only use this

You can only use this effect of "Euler's Circuit" once per turn

and equip it with this card

You can only activate 1 "Brilliant Fusion" per turn

Set: Sun & Moon: Crimson Invasion Type: Dragon Rarity: Promo Retreat cost: 1

destroy that target

Big Shield Gardna [DB1-EN097] Ultra Rare Legendary Collection 2 You can only use thisSet: Dark Beginning 1 Card type: Normal Monster Rarity: Ultra Rare Attack: 100 Defense: 2600 Negate the activation of a Spell Card that designates this 1 face down monster. At that time, flip this card into face up Defense Position. If this card is attacked, change the Battle Position of this card to Attack Position at the end of the Damage Step.