[thejeff]

Well, you'll want Alteration fairly early. Mistform and Mirror Image are both very nice for Eagle Kings.
That said I haven't had the problem with Ironskin using the (bless)(air shield)(hold)(hold)(attack)(spells) script.
Sometimes they'd cast it near the end of the battle when there were no close targets, but that isn't really a problem.

Berserkers is much less of a problem in CBM than it was in vanilla when it didn't cost gems. The question there is why the mage didn't cast the scripted spell. A mage off-script with gems will certainly do the wrong thing.