Each time you do, it costs 2 more to cast for each time you've previously cast it from the command zone during the game
Rebalanced cards cannot be crafted or otherwise added to your collection
Simply put, its easy for collectors/lay buyers to accurately price a single card given the sources mentioned earlier (TCGplayer, eBay, PSA, etc.)
Cantrip creatures like Pond Prophet and Spirited Companion are card advantage, because you spend one card and you're up another card plus a body in play
He looks at the cards, holds them up to the light, and tries to check for any signs of tampering, but like it would be for you or I or anyone else thats not trained in detecting fake, phony, or counterfeit PSA-graded collectibles, the process looks purely vibes-based