Chakrams are causing a freeze. I think I used them fine with fire mage, but am having trouble when playing storm mage. I can still get sound effects clicking on inventory items, but nothing happens. Reloading page takes me back to entering the level.
I also had a NAN hp Fire Yendor (as second Yendor, if that makes a difference). I think I was a playing fire.
(Edit: and now NAN on Cold Yendor, first yendor, playing Storm.)
No storm mage talents seem to be tier 3.