I wouldn't use this card in a deck on its own, but if you choose to I wouldn't use more than 1 in a deck
Because of the way Kroxa and Kunoros' ability resolves, you can sacrifice it in response to the reanimation clause, sacrificing it to the Altar, to mill six cards and then exile five of them to return Kroxa and Kunoros to play, triggering its ability again in an infinite loop
Genetic Apex and Mystical Island feature two completely different sets of cards
If you want more information on Glicko you can read more about version 1 and version 2 on these links
This is a good option if you have the profit margins for it (i.e., youre able to source cheap inventory) and your main priority is sales volume
People love ripping open card packs, hunting down ones with their favorite illustrations of fan-favorite Pokemon