You want to get down to a small deck as quickly as possible to remove as much variance as possible from your own side of any matchup, and theres no better card for that than the professor himself
Fuel for the Cause is a no-brainer of a counterspell in this deck since it also allows you to proliferate when you cast it
Umbreon Promo Buoys Eevee Lillie Acerola Lisia Sightseer long-sleeved kimono Mimosa Nanjamo Yellowfin Scarlett Marnie Cynthia Pikachu Early Old Back 8931 Mario Pikachu Luigi Pikachu Pikachu in Poncho Shiny Star V Universe Sword & Shield Sun & Moon Reinforcement Expansion Packs KAI Grusha PSA BGS CGC MUNC Scream Mimikyu Magikarp Gyarados Skull Gang Gokko Pikachu Charizard Pikachu Pokemon Charizard Mario Luigi Poncho Giratina pokemon cards, bulk, unopened, sr, promo, Charizard , box, Boss's Orders (Giovanni), Lillie, old back, first edition, unmarked, pokemon card game, gx, summary, retired, psa, Pikachu, Hikaru, Mewtwo, Nanjamo, Clayburst
Once per turn you can add 1 "Shadow's" card from your deck to your hand
Select stores are giving out special stamped promos when you purchase $15 or more of Pokemon TCG products
Starlit Soothsayer Getting to surveil constantly is good, even if you have to jump through a few hoops
