This is an amazing game, had lots of fun playing. Wanted to wait to write a review till I beat the game (yes i even beat the champion) and I wanted to say this game phenominal.
I will say that like other comments that some of the features seem hidden, such as not knowing that you can only put a few of some type of berry in since the up arrow instantly puts all of them in, or how a tribute will mark the tributed card with a small x on the top frame and *potentially* give the pokemon its giving its power to a heart on its frame to showcase whether or not it worked.
Other than these small gripes I'd have to say you have an amazing system here, the gameplay is fun and I think you managed to capture a good mix between inscryption and pokemon.
The core system is good and really I would love to see this grow. A.K.A more abilitites (sigils), more pokemon, more events, and in the future possibly even more leagues?