Moon Rising

This spell creates a glowing aura (akin to moonlight in intensity and tone, but it can manifest in full sunlight and so be rendered nigh invisible) in a sphere of air that typically appears as a hemisphere while its caster positions it to cover the maximum ground area. It is stationary once cast and has two effects:

All priest spells cast within it (even if cast at areas or targets outside of the moon rising area) have the maximum possible effect: They hit automatically, inflict full damage, last for full duration, all saving throws against them fail, and so on. This applies to hostile priest magic also, not merely to the spells worked by the caster and friends.

The second effect must be deliberately exercised by the caster or it is lost: One attack or activity (such as a bend bars/lift gates attempt, or a feat requiring an ability check) in each of the two rounds of the moon rising can be augmented by the spell. The caster must choose one attack roll or activity attempt to aid (if no choice is made in a round, the benefit is missed and cannot be saved for later). The enchantment gives a +4 bonus to attack rolls, a 4-point boost to ability checks, and a 20% bonus to percentile rolls.