Professor Oak's New Theory (101/123) (League Promo) [HeartGold & SoulSilver: Base Set] Scheme Set: Core Set 2019 Prerelease

Set: Core Set 2019 Prerelease Promos Type: Sorcery Rarity: Mythic Cost: {7}{R}{R}{R} Exile the top seven cards of your library

Set: Darksteel Type: Artifact Rarity: Rare Cost: {3} As long as Trinisphere is untapped

If this card is sent to the GY while equipped to a monster: You can add 1 Level 1 Dragon monster from your Deck or GY to your hand

If this card in the Monster Zone is destroyed by battle or card effect: You can destroy as many cards in your Pendulum Zones as possible (min

Great hero or grand betrayer

Professor Oak's New Theory (101/123) (League Promo) [HeartGold & SoulSilver: Base Set] Scheme Set: Core Set 2019 PrereleaseSet: HeartGold & SoulSilver: Base Set Type: Supporter Rarity: Promo