The value of original Pokmon cards varies widely based on factors such as condition, rarity, and demand
I have not looked into what the good lines are, but it seems likely there is something powerful you can be doing with this
PLAYER -- 100 LP: Hand: Gishki Erial Gishki Ceremonial Mirror Gishki Abyss Evigishki Soul Ogre Evigishki Mind Augus Gishki Vanity No cards in Deck, Graveyard, Field, Extra Deck, or that are Banished
Condition is a huge factor for this card, as most MP or worse copies will max out at $250, while near-mint copies can command anywhere between $350 to $500, depending on how good the condition is, as a highly-graded copy sells for more than $500
Expect walls of single cards, graded slabs and merchincluding new Pok Court totes and hatsas well as a VIP Lounge for collectors and creators (yes, you'll even get to host your own ripping party here)