Dehkan the Glaive
Dehkan looks like a standard-issue military glaive, with a rounded blade and short spike on the back of the head. Closer inspection reveals that it is quite old, though its metal never seems to grow dull. Near the base of the blade are five circular holes, each roughly as large as a medium-sized coin. The wielder experiences a significant increase in greed and thirst while attuned to the glaive. Dekhan has the same properties of a +1 glaive and may only be attuned to Calderón while he lives.
Phlebotomy (Level 3): Upon dealing a killing blow or rolling an 8 or higher on the damage dice on a creature of sufficient power, one of Dekhan’s holes fills with a thin surface of the victim’s blood; cleaning does nothing to remove the blood, which contains part of the soul of the victim. As a bonus action, the wielder may choose to sacrifice the soul/blood from one or more holes (either to a patron such as the Fiend, or unto oneself if one were so inclined). For each soul sacrificed, the wielder’s AC increases by 1 for the next five rounds (30 seconds); if all five holes are emptied at once, the wielder’s AC increased by 6 instead. The AC boost may instead be transferred to another creature, though for the duration the creature takes 1d3 damage per round. In addition, two holes may be emptied simultaneously to renew a spent spell slot of any level (to the wielder only).