pokemon cards app value of rare French Pokémon card? How to estimate the value

The rarest of the rare in all of Pokmon TCGP's available cards right now

It counts with the classic combo of Thassa's Oracle with Demonic Consultation, as there is no reason to not have it in a list with a more competitive streak in this color combination

Does it matter which one you use

There are many kinds of duty, and mine is to see our world grow and endure. Illustrated by Nils Hamm Standard Not Legal Alchemy Not Legal Pioneer Legal Historic Legal Modern Legal Brawl Legal Legacy Legal Comp

I should note there weren't a lot of creatures that made sense in the biome we were building, but we at least wanted a few that had more than just a handful