Feel power level spell and its upgrades are very useful, but they all share significant disadvantage: they only check one single item per spell. With many slots, it quickly becomes nearly impossible to keep track of power level of each item, and in battle there is no time to cast repeatedly feel/see/know power level to find out how are the items doing. For some time, solution was to simply recharge everything as often as possible, but with increasing energy demands and increasing cost of more powerful recharging spells, recharging all items all the time quickly becomes unsustainable. This spell is the answer. Feel power aura spell shows how much energy is left in all the items conjurer currently wears (only conjured ones of course). This is the least precise spell of this category, but it is more than enough for quick overview.

See also: see power aura, feel equip stability