Only real upside here is if you have an ability to flicker this or repeatedly have it enter play, but Meteor Golem is again, the same thing, except, simpler
As you can see, as this card only allows you to use it for Ancient Pokemon which only exist in Paradox Rift at present its not likely to pop up in any decks that arent based specifically around that type of Pokemon
You can build some kind of treefolk aristocrats deck that sacrifices big creatures to recur other big creatures to your hand
Lost Origin is another strong option, featuring Giratina V Alternate Art, which has some of the best artwork of the era, and Aerodactyl V Alternate Art, which has been climbing in value
It depends on the cube you are playing, the deck you are playing, the colours it is, all the other cards in the deck, the options in your pool, the nominal power of those cards and so on and so forth
(If this card is your chosen companion, you may cast it once from outside the game for as a sorcery.) : Add