[Nagot Gick Fel]

One item I've found very useful to deal with seemingly unkillable SCs, if you can't afford the "Drain Life" standards, is the Staff of Corrosion. Once I had 7 mundane commanders with these toys annihilate an annoying Air Queen who had luck, high MR, and full immunity to everything - except there's no immunity to acid. I think she died before the 5th battle round.

There was a bit of discussion about these staves on the French forum some months ago.