Man litchcraft is such an awsome spell.....

[Taqwus]

Legion of Wights _is_ strong (as it's a Conj-9 with a non-trivial death level requirement and gem cost, it should be), but as with many superheavy infantry units, beware of things like mass lightning attacks (e.g. Caelian fly-by with Wrathful Skies, or eventually Shimmering Fields, or the Pythium quickened orb-lightning communion abuse) as lightning ignores their otherwise very nice armor. Area fire attacks can also be bad, although wide-area fire tends to be more armor piercing instead of negating.