Most Pokmon cards are graded in accordance with Professional Sports Authenticator (PSA), which is scaled from a 1 for poor and a 10 for Gem Mint
The created card doesn't necessarily need to be from your deck, library, or sideboard, and could be a card in another set or format, as if it was created "out of thin air"
They don't go away as steps, phases, and turns end, and effects that add mana "of any type" can't give you energy counters
Take that Ragavan, Nimble Pilferer and Fear of Missing Out, tell them Run for Your Life and make it rain with combat value
I have yet to see someone open their fifth copy of a rare or mythic, though, so I dont know how much Vault progress those will give you
Theyre effectively counter-quadruplers, because both the initial replacement effect adding counters and the death trigger are enhanced