Re: Revives and mercs in UT?
Like mackscynox says, it's definitely doable with a summonmancer, but I'm not sure I've ever seen it done with Revive charges. Skeleton mastery and Summon Resist are pretty key.
Summon Resist doesn't apply to Revived and they already have +200% life without Skeleton Mastery, which applies +(5*slvl)% life and +(10*slvl)% Damage. However, pets take 400% damage from the uber bosses (mercenaries take 200% damage, and only apply 25% damage in return).
You would likely be required to collect revives more than once and use some sort of slow poison to prevent uber regen while doing so, and the process would be slow. Could be doable though IMO.
Mephisto has Poison Resist 110%, an immunity which can only be broken by a Necromancer's level >10 Lower Resist. The only ways to stop his damage regeneration are Open Wounds and skills applying fire damage per second (actually fire damage per frame: monsters do not regenerate damage in frames in which they take damage, so when they take damage every frame they do not regenerate).
But in this case I'm interested in knowing whether a caster sorceress could manage to kill the uber three with a very well geared merc using CB and say 8 urdars and backing it up with spells herself.
Diablo is Immune to Fire (110%) and Cold (115%), as is Baal (115% and 185% respectively); uber Mephisto is Immune to Lightning (110%) and Poison (110%). Fire immunities can be broken with an Infinity polearm's Level 12 Conviction Aura When Equipped, as can Diablo's cold immunity: if some -% Enemy Fire Resistance is equipped and Blaze, Fire Wall or Meteor are used to stop damage regeneration then it
might be possible to kill all three if mercenary and Revived can be kept alive (switching weapons will cause Revived to expire, so Marrowwalk Boneweave Boots might be needed for Life Tap charges).
There's still the issue of the Pit Lords summoned by Diablo, which are always Immune to everything except physical damage. Although they don't have to be killed, their presence could interfere with Revived (attacking Pit Lords instead of the uber bosses) and Sorceress.