[Soyweiser]

It depends, in cbm axes of hate (dual wielded on a quickend flying thug) can do 100+ fatigue damage in one round. Crits will then kill the SC. Petrify is also great. If it fails the mr roll, the unit is still petrified.

If you equip the gate cleaver on a quickend grendel you do more than 60 damage AN each hit. So that solves his high regen+prot.

But the best way. Just ignore it. It is probably a huge investment of gems, and can only take one province a turn. Make some thugs and hit him harder back than he can hit you.

PS: eventually paralize/soul slay spam will get through. It will take a long time, but if you have a lot of spare S and D mages it is doable. (D mages spam undead) If you have s+d mages even better, get the spells that feeblemind, spam the **** out of it, and hope for a feeblemind affliction, suddenly, it has only 21 mr.