How the hell do you kill The Other?

How the hell do I even get to the location on the map? All the paths are deadends.

There is a scroll of summon elder worm (level 9 druid spell) on a hidden bag in the NW of the map.

On angel path you can kill the other with storm of justice, eye of the sun 8 and 10 th level spells respectively, Sheelah can channel energy, Scorthing ray or hellfire blast can damage it too.

daeran seems to be a walking-talking xp bank. i ignored the advice of the inquisitor and told daeran i knew everything on the streets of drezen and got teleported to the pocket plane which looks similar to demon girl's blank dream. i let my velociraptor with 10 attacks run wild on him and killed him in 1 turn. over a million xp for me, with only active members receiving xp turned on. took me from 16 to 18th level. when i exited the portal, daeran burst in what looked like phantom blood and stood still. interacting with him resulted in me looting his corpse... i guess he's dead now. i assume it's just a fail state and there's probably not a quest to un-stone statue him. so i'll reload. but if you don't care about him, bring him along and slaughter him when you can. i haven't been to the abyss yet, so 1,105,920 xp is quite the boon so early, if you can beat him that is. i'm going to bump up the difficulty and see how hard he is to beat at higher settings for fun.

the evil option gift does work now for sure. i tested the evil option to see what i got. its main appeal if you aren't a spell caster is a deflection bonus equal to your charisma modifier. deflection is the one given by rings and certain mythic class holy auras, so unequipping my ring and not having any aura as a trickster, the pathetic +2 deflection bonus showed up. deflection doesn't stack, so anything stronger will override it and it wont show up.

Bane of the Spirit ring from the Phylactery of Stevanius the Rotten makes short work of The Other.