Copy and paste it into Notepad or whatever text editor you use. This is what it says
55. Head out then up north onto the next screen. Save and inspect the
hole in the wall. A creature is attracted by the elven bait that you have. It
will summon a snow man if you don‟t kill it quick. Metalist curse it to
increase the amount of damage it takes. It is vulnerable to plague as well,
which Brussian's 'Cerberus Jaws' inflict. Once it dies it will turn into a heap
of milipuves. You may randomly receive a crystal heart and/or a
Nahanaha Needle sword. Quest complete.
Spoiler: select the part within the brackets to see it. (Normally when you
knock the Ma'gga Nahanaha down to less than 3000HP, it will transform
into milipuves. It is possible to defeat it directly though, by dealing less
than ~7000hp and then deal the remaining ~3000hp in a single turn.
Defeating it this way may also be the only way to receive the extremely
rare Nahanaha Needle. The crystal heart is likely a random drop from the
snow man.)
Return to the thieves guild. (Use the Kashilin Hole Map in the area you
started the chapter in) Talk to the green haired guy and he will give you a
book that increases Mercantile points to 25 points. Talk to bruberk to
complete the quest and get another quest.
I remember trying really, really hard to kill it before it transformed into milipuves to get that Nahanaha Needle. I must have tried 50 times, maybe more, before I was able to do that. I vaguely recollect that even if you do kill it before it transforms, you don't always get the Needle, so it must be a random drop. Good luck.
