[Taqwus]

Also, see what opposition it's tuned for. An SC that depends on life-draining attacks to reinvigorate itself, for instance, might not do so well against a horde of undead or mechanical men. If it relies on flight, storms will help. If it uses fear, try unbreakable units.
A Shedu is an astral mage; it might be duelable depending on how much it's been boosted.
Curse, Feeblemind, Blindness, Horror Mark can all be caused by spells, items or both. Paralysis can work, Petrify is a guaranteed paralysis /if/ you can get a caster there. Instant-death spells combined with Spell Focus, Rune Smasher might work as well. Even a Seeking Arrow can be nice for the extra encumberance from the chest wound.