When a creature that can see the nabasu's eyes starts its turn within 30 feet of the nabasu, the nabasu can force it to make a DC 15 Wisdom saving throw if the nabasu isn't incapacitated and can see the creature. On a failure, the creature loses a hit die. A creature that has lost its last hit die to the nabasu's death gaze has disadvantage on all death saves for the next 24 hours, and if it dies within that time, it rises as a ghoul in 1d4 rounds under the nabasu's control. Ghouls created in this way become free willed if the nabasu that created them dies. Unless surprised, a creature can avert its eyes to avoid the saving throw at the start of its turn. If the creature does so, it can't see the nabasu until the start of its next turn, when it can avert its eyes again. If the creature looks at the nabasu in the meantime, it must immediately attempt the save. While averting its eyes, any attacks on the nabasu are done at disadvantage.