Bite. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 14 (4d6) piercing damage.
Eye Rays. Shoots three random eye rays against 1 to 3 targets, roll 1d10
Charm Ray. (1) DC 16 Wisdom, charmed until harmed by Beholder in 120
Paralyzing Ray. (2) DC 16 Constitution, paralyzed, save at end of turn in 60
Fear Ray. (3) DC 16 Wisdom, frightened, save at end of turn in 60
Slowing Ray. (4) DC 16 Dexterity, speed is halve, no reactions, and either bonus action or action, save at end of turn in 90
Enervation Ray. (5) DC 16 Constitution, half damage on successful save, for 36 (8d8) necrotic damage in 90 ft.
Telekinetic Ray. (6) DC 16 Strength, target moved 30 ft in any direction, restrained until next Beholder turn in 120
Sleep Ray. (7) DC 16 Wisdom, target falls asleep and remains unconscious, no effect on Constructs or Undead in 60
Petrification Ray. (8) DC 16 Dexterity, target begins to turn to stone, restrained. Save at end of targets turn, failed save creature is petrified. in 30
Disintegration Ray. (9) DC 16 Dexterity, for 45 (10d8) force damage in 60 ft.
Death Ray. (10) DC 16 Dexterity, for 55 (10d10) necrotic damage in 30 ft.