After playing long 36 levels i have some suggestions for balance this character:
1/ Increase starting hp of minions, but decrease their growing each level. Well actually i surely dont know if there is hp and dmg grow of minoins each level, or its of better items, their number growing, and monastery. But my idea They are very low at beggining and extremly toughness at level 30+. HP of minons (werewolf and evils) should be decrease about 20-30%.
2/ Thorn damage reduction for champions, bosses, players (about 50%) or decrease all dmg done to all. (about 25-35%?). And increase cast range.
3/ Cooldown for Werewolf (2 min).
4/ Decrease cooldown for revive (lvl 20 6.2 ---> 4.0)