Multiattack

The vættir can use its Disorienting Gaze. It then makes two Vættir's Greataxe or Necrotic Bolt attacks.

Vættir's Greataxe

Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 11 (1d12 + 5) slashing damage plus 4 (1d8) necrotic damage.

Necrotic Bolt

Ranged Spell Attack: +4 to hit, range 120 ft., one target. Hit: 15 (3d8 + 2) necrotic damage.

Disorienting Gaze

The vættir locks eyes with one creature it can see within 30 feet of it. The target must succeed on a DC 15 Charisma saving throw or be incapacitated for 1 minute. While incapacitated, the creature moves in a random direction when it moves. An incapacitated creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success. If a creature's saving throw is successful or the effect ends for it, the creature is immune to the vættir's Disorienting Gaze for the next 24 hours.

Corpse Breath (Recharge 5-6)

The vættir spews forth a 15-foot cone of putrid gas. Each creature in the area must make a DC 15 Constitution saving throw. On a failure, a creature takes 21 (6d6) poison damage and is poisoned for 1 minute. On a success, a creature takes half the damage and isn't poisoned. A poisoned creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.