[Taqwus]

Drain Life does armor-negating 100-prec unresistable damage from a distance. Boots of Quickness + Standard of the Damned = 2x life drain per round. Leech also works.

Petrify is remote, always-hits, and causes paralysis even if it's resisted.

A flying Bane Lord with a nasty weapon like Gate Cleaver, boots of quickness, and an antimagic talisman can do wonders against anybody who's relying on time to cast buffs.

Massed Faeries (massive stun damage from the elf shots) and Mandragoras / Mannikin (sleep vines get 3att each or so, making swarms dangerous) can also be ugly.