That's why in January 2021, a PSA 10 version of the blue-backed, unnumbered, Topsun Charizard card sold for a mega $493,230 (392,325) at auction
Its also interesting hand manipulation alongside cards like The Biblioplex and Triskaidekaphile
they cannot be used to play TCG games
Professor Oak serves a similar function with the added utility of drawing Dragonair or Dragonite to evolve an existing Dratini
EX2-031 R Digimon Lv.4 Guardromon Color Black Cost 5 DP 4000 Digivolve Cost 1 Black 2 from Lv.3 Form Champion Attribute Virus Type Machine Card Text 1 [Effect] Blocker (When an opponent's Digimon attacks, you may suspend this Digimon to force the opponent to attack it instead.) [On Play] 1 of your Digimon gets +3000 DP until the end of your opponent's turn
This powerful floodgate is a double-edged sword since its effect applies to both players, so be careful when playing this in tandem with other Black decks that DigiXros like DarkKnightmon