Riurry can be found in a corrupted glade just east of Yrruir's glade. As an evil chaotic being, he of course offers rewards if the PC kills Yrruir when 'C'hatted with. If the PC then returns to Yrruir, he is warned not to listen to Riurry's evil babbling. Killing Yrruir at this point will result in a significant alignment drop, of course, but causes no other noticeable effects. The PC does not lose the Lucky or Fate Smiles intrinsics, nor does he gain the Cursed or Doomed intrinsics. Returning to Riurry and 'C'hatting results in being rewarded with 1-2 corruptions, a blessed amulet of chaos and 5-7 uncursed potions of gain attributes. The player has to decide which path to take. The potions of gain attributes are a significant reward. If the player is going for an ultimate chaos god ending, it seems logical to accept Riurry's quest. Other PCs may choose this quest if corruption is either not a problem or desired for chaos gate entry. The alignment drop may also be useful for becoming chaotic around experience level 30 in order to receive Gaab'Baay's quests, for those PCs attempting an ultra ending.

But if you don't, I suggest that you go somewhere else,
as beoynd this point your nightmare's begins!