I'm not into turn-based games but I played this more like a puzzle game and had a lot of fun. You need a second to get the looping mechanism but when you do the games gets really fun. The looping part is very rewarding. I'm really impressed and I'd like to leave some feedback, but please base in mind that this is mostly nitpicking and the idea here is very promising. Also the game oozes style, awesome job!
Feedback:
* It would be a bit easier at the start if the currently selected hero's stats bar was highlighted a bit more (but I like the names and learned quite fast which is which ;) )
* I'd limit the skills to two per hero for the first 2-3 combats as it's a lot to take in at first (I've started using non-basic attack only during the second fight)
Again, great job!