I love the gameplay loop of this game and discovering combos and what works well
Though I think the dragon harpy's ability to unbirth the enemy and lay an egg is great, but feels a bit too overpowered? Don't get me wrong, I do not want them removed, but maybe some small nerf?
I'm not a game dev, but I think adding a buffer time between or during the unbirth (maybe a small scene?), which restricts the player from moving or laying the egg for a couple of turns
Also, another thing I think is overpowered is the ability to unbirth pitch and then just leave the level. Maybe pitch can break out, or if the player goes on to the next level, they'll still have pitch in them, so when they have to drop her, she will become an immediate threat or something.
EDIT: 2 Days Later, I realised this fixes nothing at all since you can just release pitch and leave the level.
These are all just suggestions, though I don't know the balance of the game or what you are aiming for, so no pressure here, it's a 10/10 game, I would recommend