Very impressive and polished entry! The main mechanic is a really clever idea that leads to a lot of unintended mayhem. :D I could see that working in a PvP multiplayer game as well. If I had one suggestion it would be to add a much longer cooldown to the cauldrons. As it is, if you're going to toggle their movement direction once, you're very likely to toggle it three or four times, which makes them very unpredictable and takes a little bit away from the "puzzle" part of the "action puzzler". ;)