pokemon cards pikachu ex box TCG and Hoopa EX Legendary Collection Toys & Games Deck (60 cards) Red & Blue Collection: Pikachu-EX'

Its cheap, scalable, and keeps coming back for more

"An end to reason, an end to order, forget all that has been"

If you added white to your deck, you could do the same thing but with Ephemerate and get a third Thoughtseize for free at the start of your second turn

10 Alolan Ninetales GX (Secret Rare) $26.59 A Novel And A Ninetales Alolan Ninetales is the perfect contender to receive a Rainbow Secret Rare, as the rainbow recoloring usually works best on Pokemon that have white, muted, or monochromatic color palettes

It wont stop someone else from taking your creature with a different mind control later since these effects usually overwrite previous ones (something about timestamps)

At that point it feels rather like cheating