This is a pretty impressive game. The graphics are pretty good, and most of them are original, and it implements not only tower defense mechanics, but also card mechanics and a player that can move around and attack things. That's a pretty big scope for a jam game.
It's definitely rough in its current state. The biggest problem is that it's just super unbalanced. You can't place many totems, they're not all that effective, the player character isn't all that effective, and there are a ton of enemies. The UX could be better: I didn't realize that you needed mana to place totems and thought it was just broken, and I didn't connect the gauges in the upper left to health/mana or figure out the draw mechanic until my second round. The cards seemed a bit buggy as well.
I think with a little more work this could be a really good game, and as it stands it's still an impressive jam entry.