If you make a board for reviews on here, I can post it there too, it helps build user engagement.
I played about 3 waves, until it seemed like things were going to loop
very clean visuals, very snappy, quick to open up to player engagement,
sprites are well animated, animations are great, however I am a little lost as to how to play the game as things progress.
perhaps a tutorial appearing on the side, maybe some visual queues on a first run would be good? I accidentally attacked my own guy. The frog's lick only seems to do damage, including to friendlies.
Combo system with characters based on D&D classes/monsters is a great setup, and for many I suspect wouldn't take much learning to figure out, still I think a few more clues/hints along the way would be good. I do wish I had known what my character's movesets were going to be before I picked them.
"strength" is spelled "strenght" on the card for the monk
Maybe an alternative key for ending the turn would be good? some games use a space bar, you could put a checkbox next to the End Turn button to allow for spacebar to end a turn incase some players don't want that on by default.
I was a little confused about how to switch character moves? the menu that pops up when you double click a character is great, but I think a simplified version showing their moves in a corner on the screen might inform the player that they have a specific move set, or that they can even change character moves in the first place. When I took the healing perk for healing from movement, it seemed to instead heal every time any of my characters made an action. When I mouse over a character, the perk displays, but the text is small and unreadable

I like the idea that the perk you don't take is the one the monsters get. I love the design overall, I think this is a great premise for a game. I think the sprites are incredibly charming and the overall aesthetic is wonderful, great for either cozy game material, casual mobile game material, or possible a unique epic RPG depending on how you want to take this game.
(as an aside, you have a frog bard, you could make a joke about "its not easy being green")