View source for Guide:Nihlathak 101 v1.10, by mephiztophelez

==Why?==
Well, if the fact he's a traitor isn't enough for you, here are some more reasons:
* A: he is the only place to get Keys of Destruction
* B: at level 95, he is the second highest level, regularly occcuring (eg: not an 'uber') beasty in the game, ahead of even the Ancients (87) and Diablo (94). Only Baal (99) is a higher level monster, and much slower to get to. The Halls of Vaught are a level 84 area, the second highest possible ouside of uber'land
* C: GC's dropped by him can have or be re-rolled to have the prized "of Vita" suffix, +40-45 life. he can also drop "Pestilent small charms of Anthrax" (eg: sc's with > 100poison damage. iirc: Baal is the only other place to get these)
* D: he can drop any rune and shares the 'best' drop rate for runes >vex with Hephasto
* E: he's VERY easy to get to VERY quickly once you know how