fix wizard spells that bypass chaplain's immunity

[Lady Birb]

I doubt that they are immune to fireball - aye?

What about Skeletons attacking them? Ain't that the same as Golems attacking them?

Hrm, if I recall correctly chaplains are also not immune to fireball? I could be wrong though.

Fireball: They nullify the fireball on direct hits but can take splash damage from the explosion if it misses them. Fixing this would require significant effort.
Skeletons: I forgot about them in op. will correct this