WD: Protection from Spirits probably ought to belong on a druid's spell list. I spent ages searching for a spell called "cleave to the shadows" until finally I came across "know the shadows" in OA which is probably the one I meant. It's originally a Shugenja (divine) spell, and since the OA/LO5R shugenja are tied to the elements, it would probably make sense to allow it for druids as well.
Since Ape is a spontaneous divine caster, though, is he not limited to his "spells known" as far as spell-completion items are concerned?