Like most Pokmon cards, the value of Ampharos depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Darkness Ablaze)
So this was pretty far removed from playing with Magic cards
Entomb, which hails from 2001s Odyssey set and is actually that sets most valuable card, allows you to search your library for any card and put that card directly into your graveyard only to be recurred later through whatever means are at your disposal
Kaldheim is nearly here, and with it comes some of the baddest, most unapologetically awesome characters, cards, and styles Magic has ever seen
This assures you the card is authentic