Multiattack. The beholder uses Eye Rays three times.

Bite. m +8, reach 5 ft. Hit: 13 (3d6 + 3) Piercing damage.

Eye Rays. The beholder randomly shoots one of the following magical rays at a target it can see within 120 feet of itself (roll 1d10; reroll if the beholder has already used that ray during this turn):

• 1: Charm Ray

  wis DC 16. 13 (3d8) Psychic damage, and the target has the Charmed condition for 1 hour or until it takes damage. Half damage only.

• 2: Paralyzing Ray

  con DC 16. The target has the Paralyzed condition and repeats the save at the end of each of its turns, ending the effect on itself on a success. After 1 minute, it succeeds automatically.

• 3: Fear Ray

  wis DC 16. 14 (4d6) Psychic damage, and the target has the Frightened condition until the end of its next turn. Half damage only.

• 4: Slowing Ray

  con DC 16. 18 (4d8) Necrotic damage. Until the end of the target's next turn, the target's Speed is halved; the target can't take Reactions; and it can take either an action or a Bonus Action on its turn, not both. Half damage only.

• 5: Enervation Ray

  con DC 16. 13 (3d8) Poison damage, and the target has the Poisoned condition until the end of its next turn. While Poisoned, the target can't regain Hit Points. Half damage only.

• 6: Telekinetic Ray

  str DC 16 (the target succeeds automatically if it is Gargantuan). The beholder moves the target up to 30 feet in any direction. The target has the Restrained condition until the start of the beholder's next turn or until the beholder has the Incapacitated condition. The beholder can also exert fine control on objects with this ray, such as manipulating a tool or opening a door or container.

• 7: Sleep Ray

  wis DC 16 (the target succeeds automatically if it is a Construct or an Undead). The target has the Unconscious condition for 1 minute. The condition ends if the target takes damage or a creature within 5 feet of it takes an action to wake it.

• 8: Petrification Ray

  con DC 16. 1 The target has the Restrained condition and repeats the save at the end of its next turn if it is still Restrained, ending the effect on itself on a success. 2 The target has the Petrified condition instead of the Restrained condition.

• 9: Disintegration Ray

  dex DC 16. 36 (8d8) Force damage. If the target is a nonmagical object or a creation of magical force, a 10-foot Cube of it disintegrates into dust. Half damage. If the target is a creature and this damage reduces it to 0 Hit Points, it disintegrates into dust.

• 10: Death Ray

  dex DC 16. 55 (10d10) Necrotic damage. Half damage. The target dies if the ray reduces it to 0 Hit Points.

Antimagic Cone. The beholder's central eye emits an antimagic wave in a 150-foot Cone. Until the start of the beholder's next turn, that area acts as an Antimagic Field spell, and that area works against the beholder's own Eye Rays.

Chomp. The beholder makes two Bite attacks.

Glare. The beholder uses Eye Rays.