Zalkoré

When a creature that can see Zalkoré's eyes starts its turn within 30 feet of Zalkoré, Zalkoré can force it to make a DC 14 Constitution saving throw if Zalkoré isn't incapacitated and can see the creature. If the saving throw fails by 5 or more, the creature is instantly petrified. Otherwise, a creature that fails the save begins to turn to stone and is restrained. The restrained creature must repeat the saving throw at the end of its next turn, becoming petrified on a failure or ending the effect on a success. The petrification lasts until the creature is freed by the greater restoration spell or other magic.

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 Zalkoré until the start of its next turn, when it can avert its eyes again. If the creature looks at Zalkoré in the meantime, it must immediately make the save.

If Zalkoré sees itself reflected on a polished surface within 30 feet of it and in an area of bright light, Zalkoré is, due to its curse, affected by its own gaze.

Zalkoré makes either three melee attacks—one with its snake hair and two with its shortsword—or two ranged attacks with its longbow.

Melee Attack Roll: +5 to hit, reach 5 ft., one creature. Hit: 4 (1d4 + 2) piercing damage plus 14 (4d6) poison damage.

Melee Attack Roll: +5 to hit, reach 5 ft., one target. Hit: 5 (1d6 + 2) piercing damage.

Ranged Attack Roll: +5 to hit, range 150/600 ft., one target. Hit: 6 (1d8 + 2) piercing damage plus 7 (2d6) poison damage.