Bash as a single hit means I'm gona kill everyone while taking zero damage by running to the enemy > bash > hit > hit > Run > Cooldown > Repeat.
Trap should be nerfed as 20 minutes is way too much , should be 12 or 15.
Since The demo would be probably an RPG why not give him temperory defence > Divine shield with diffrent name and also nerfed with more cooldown.
Ever thought of an AoE spell for him? like he throws 5 axes that damage all in their path in the area (not all together at once ofcourse since he doesnt have 5 hands but instead one by one).