Duriel, the horror of (classic) Diablo 2
, at least on normal mode. Afterwards? Summon Blood Golem, cast Iron Maiden = enjoy near immortality before the bug was fixed =/. But yes, I think I died countless times on my sorc when nobody was available (or one didn't want to to open a game named "Act 2 Duriel" and see if someone were interested
). I think a few common sorc strategies were pre-merc addition to firewall or fire-follow-magic his @ss off.
In comparion to Mephisto and Diablo: frost orb, frost orb, frost orb (+ meteor/hydra for a change) ad infinitum and enjoy the ownage
.