[Agrajag]

Solar Rays is anti-undead, which doesn't really fit the theme (they may be loaded with holy, but they don't traditionally fight undead), though Star Fire seems nice (and weak =P)
Mist is fitting, but kind of funny, because only one in four prophets will be able to cast it (O=) or a heavily decked one (Bag of Air + Winged Helmet).
Going over the spells list, Wind Guide sounds cool, it fits the theme of buff-like miracles (like Joshua and his cane-buff =P).
Sulphur Haze sounds like a thematic evocation, though it too will be hard to cast :\