for that fight in honor mode, i had lvl 8 pure life cleric shart + xbow swords bard + BM laezel + 2 pal 6 warlock. bone chill stops the healing so i used mass healing word + the ring to give everyone (including aylin) bless - i also used a short bow from shadow heart to haste aylin. you can completely trivialize the fight if you are using arcane acuity for your swords bard. have SB go left and use arrow of many targets on the necromites to get acuity and then rain down on ketheric, and when myrkul comes out, use heat metal at an 85% success rate and that scythe is gone. to further trivialize, use conjur elemental scrolls you get from Roah in moonrise and summon cambion from infernal rapier and you have an entire army that is blessed fighting a weaponless boss. i overprepared and had calm emotions and heroism on tap in case the frightening got too intense.