The value of Pokmon cards mainly comes down to supply, rarity, condition, graded population numbers and demand
I won't spoil the surprise of what happens in the Mewtwo and Charizard immersive cards
Near Mint Lapras cards typically command premium prices, while PSA 10 graded copies can sell for multiples of their raw card value
However, the rules changed again in 2021 (2020 in Japan), and the latter 3 methods had those restrictions lifted, while Pendulums still had to abide by them
Just keep in mind that each Courts trigger applies at the beginning of your upkeep
Vein Ripper Vein Ripper is exceptionally good at seeing the value in every creature, and there will come a point in the game when losing becomes inevitable for your opponents