![Professor Oak's New Theory (101/123) (League Promo) [HeartGold & SoulSilver: Base Set] BT9-099 Set: Structure Deck: Seto Kaiba](https://cdn.shopify.com/s/files/1/0757/5211/2443/products/54c72f8f-a064-46bd-b9e2-817ec7174f98_63c8a1bc-a4df-40d8-83ee-418f3b339314.jpg?v=1696346569)
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Set: Structure Deck: Seto Kaiba Card type: Union/Effect Monster Rarity: Super Rare Attack: 1500 Defense: 1800 Once per turn
Set: Release Special Booster Promos Card type: Digimon Rarity: Promo Digi type: Cyborg/D-Brigade Play Cost: 2 Form: Rookie Attribute: Virus Digivolve Cost: 0 Digivolve Cost Level: 2
Set: Dimensional Phase Card type: Digimon Rarity: Uncommon Digi type: Unknown Play Cost: 6 Form: Champion Attribute: Unknown Digivolve Cost: 3 Digivolve Cost Level: 3 [When Digivolving] You may place up to 2 [Vemmon] from your trash under this Digimon as its bottom digivolution cards
add 1 "The Weather" card from your Deck to your hand
Professor Oak's New Theory (101/123) (League Promo) [HeartGold & SoulSilver: Base Set] BT9-099 Set: Structure Deck: Seto KaibaSet: HeartGold & SoulSilver: Base Set Type: Supporter Rarity: Promo