meh. exp gain is hardly important… resists are by far the most important stat
but to answee the op…
when 80-120 sojs (stones of jordan) are sold to merchants on a server (realm)
a clone of diablo will spawn in every hell game of that server
( these ars split between ladder, nonladder and hardcore ladder, hardcore nonlader. for each realm NA/EU/ KR) so there are a total of 12 realms, each with thier own count
it is called a “walk” becuase in the original game before 2.4
it would shake the screen and say " diablo walks the earth"
this will spawn dclone at the first superunique monster you meet which you have not yet visited in the game and will replace them and thier minion pack
dclone has very high regen so you either need extremely high damage or crushing blow and/or open wounds.
while he is technically called “uber diablo” no one calls him that, everyone calls him “dclone”
because uber baal and uber mephy are found in uber trist the diablo in uber trist is for some reason called “pandemonium diablo” because the uber trist event is called the “pandemonium event”
so when people refer to “uber diablo” they are most likely refering to “pandamonium diablo” and not “dclone”
when he is killed he will drop a single Annihilus charm ( regardless of how mnay people are in the game)
this means if you think ( or know) people are going to do a “walk”( get him to spawn)
iuts best to join your own solo passworded game so u can guarantee you get your own personal one and dont have to fight anyone else for it ( just dclone himself )