[pnpgm] casting Insubstantiability

[Alex Koponen]

Hearing the demand from the woman and seeing the spears aimed at her 
Z'leyra knows she must keep the claw away from them. Though she would 
like to use Astral Fire, Quarrells or some other offensive spell or even 
just engage in combat she calculates that casting Insubstantiability on 
herself gives the best chance of keeping the Claw from falling into 
their hands. She knows any spears thrown may potentially interrupt her 
spell if it damages her. Her armor is good, but not impervious. 
Hopefully she will be lucky. At least any spears thrown will leave the 
spearman having to ready another weapon.

Mentally bracing to complete the spell even if injured she casts 
Insubstantiability  EL2 on herself. This is the highest EL she can cast 
it in one phase. Casting it on herself allows her MDV to help the 
casting, which should overcome any Purifications against Balance magics. 
By the time they can melee her she should be insubstantial. Casting the 
spell she twists her body for emphasis to her words, to allow her 
buckler to sweep around to her left and to throw off the accuracy of any 
spears thrown.