Balance is something we’re trying to fix all the time. So, the real problem here is not that Bishop runs out of mana – because he should run out of mana when he spams spells like that. The actual problem is that fighters (mainly Tanks) can’t hold their own against Raid bosses and in PvP in general. Buffing tanks PDefence/MDefence is something I really want to do properly and have been thinking about for a while.
The raid bosses will be tested again and I hope I can find a more viable solution for Tanks so they can actually Tank them, otherwise they seem useless.