This is a cool concept. It felt a bit weird having to draw out the cards myself, but i get it, that its a decision the player has to make (since it costs action points). Overall a cool game, i think its a bit harsh, would be cool if it was a bit more forgiving, so i could build out some more stuff :D but other than that its great <3

Neat! I would have like a bit of time to read what the cards did, but I got there after a couple of tries haha
Also going to confess that i didn't understand what "leveling both of them if they are equal in level." Does something happen when they are of equal level? Is the level the little number next to the tower? How do I set/increase/decrease/choose the level number? Maybe it's just my luck, but I didn't notice anything happen with any different level numbers.
Anyway, congrats on making a game!!!!

The concept is fun, with a bit of variability and it does fit the theme. However, there is a game-ending glitch where level 2 slimes are unkillable, and the theme of joining together doesn't add to the strategy as there is no choice related to it. There also seems to be no audio and the tethers between the towers can cover important information.