Really really amazing entry.
Obvious thing out of the way first, wish there was sound and music as it really kills the vibe. With sounds it would have been perfect imo!
I had so much fun building decks and trying weird stuff. The damage spells felt a little powerful at times since they are just free damage for the most part. I basically used them off cooldown, perhaps if there was more of a downside to discarding cards? alot of the time discarding cards was purely beneficial so discarding 2 for the sake of a spell always seemed worth.
Something that I will say is that it was very unclear if the loop had an ending or if it was infinite.
The upgrades seems to come in a random order and also there was no counter or anything. I got to the bird with 124 HP before losing my good runs.
This was such an amazing game all around and is the one I hope places super high, cause imo this is probably going to be the game I wish had a full release the most, I can tell. Just my type of game hehe.
Fantastic work!