![Groudon (81/168) [Sun & Moon: Celestial Storm] EX1-021 You can only use this](https://cdn.shopify.com/s/files/1/0757/5211/2443/files/944fdfb4-0cd8-46fe-b290-f038ed98ffed.png?v=1746210283)
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You can only use this effect of "Mekk-Knight Blue Sky" once per turn
•ATK and DEF of 1 "Subterror" monster on the field become equal to its combined original ATK and DEF until the end of this turn
Set: 2018 Mega-Tins Card type: Effect Monster Rarity: Ultra Rare Attack: 1800 Defense: 1300 If this card is Normal or Special Summoned: You can discard 1 card
Set: XY: Flashfire Type: Dragon Rarity: Uncommon Retreat cost: Colorless
you can also Xyz Summon this card by using a "tellarknight" Xyz Monster you control as the Xyz Material
Groudon (81/168) [Sun & Moon: Celestial Storm] EX1-021 You can only use thisSet: Sun & Moon: Celestial Storm Type: Fighting Rarity: Holo Rare Retreat cost: Colorless,Colorless,Colorless,Colorless