Aiwass previously obtained the "Wings of Freedom Offered," which is the most crucial part of the Sasha nun set.
The most important "breath back blood" function is there...but this one falls somewhat short.
Although it too can increase healing volume, its enhancement only triggers "when this skill will cost one's own life."
It might be more appropriate to give it to a Blood Magus rather than a Priest. After all, not all of a Priest's healing powers require burning one's own blood... But Blood Magus indeed uses blood-burning simulation spells.
As a final piece of equipment for someone on dual Paths, Aleister, who is now both the Son of the Moon and holder of the power of Path of Love, can naturally use it too!
...However, there seems to be something wrong with this extraordinary equipment.