Blind Beholder

Anti-mind Cone. The Blind Beholder's central eye creates an area where everyone within it gains disadvantage on wisdom and intelligence and wisdom saving throws, in a 150-foot-cone. At the start of each of its turns, the beholder decides which way the cone faces and whether the cone is active. The area works against the beholder's own eye rays.

The Higher Keeper. The Blind Beholder has all traits that Knowledge Keepers have.

Guardian of Knowledge. When killed, the Blind Beholder reforms and returns to it's designated area within the library after 1d4+1 days.

Call Keeper. The Blind Beholder calls out to the denizens of the Library, summoning 1 Knowledge Keeper to the field

Bite. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 14 (4d6) piercing damage.

Overwhelming Knowledge. RangedWeapon Attack: +11 to hit, range 10/60 ft., 1 target. Hit: 31 (4d12 + 9) psychic damage.

Eye Rays. The beholder shoots three of the following magical eye rays in an order (from 1 to 8), choosing one to three targets it can see within 120 feet of it:

1. Blinding Ray. The targeted creature must succeed on a DC 16 Intelligence saving throw or be blinded by the beholder for 1 hour, or until the beholder harms the creature.
2. Paralyzing Ray. The targeted creature must succeed on a DC 16 Constitution saving throw or be paralyzed for 1 minute. The target can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.
3. Gravitation Ray. The targeted creature must succeed on a DC 16 Strength saving throw or lose it's walking speed, going 15 feet in the air and can be smacked into a surface as a bonus action by the blind beholder dealing 2d8 bludgeoning damage for 1 minute. The target can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.
4. Slowing Ray. The targeted creature must succeed on a DC 16 Dexterity saving throw. On a failed save, the target’s speed is halved for 1 minute. In addition, the creature can’t take reactions, and it can take either an action or a bonus action on its turn, not both. The creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.
5. Enervation Ray. The targeted creature must make a DC 16 Constitution saving throw, taking 36 (8d8) necrotic damage on a failed save, or half as much damage on a successful one.
6. Telekinetic Ray. If the target is a creature, it must succeed on a DC 16 Strength saving throw or the beholder moves it up to 30 feet in any direction. It is restrained by the ray’s telekinetic grip until the start of the beholder’s next turn or until the beholder is incapacitated.
   If the target is an object weighing 300 pounds or less that isn’t being worn or carried, it is moved up to 30 feet in any direction. The beholder can also exert fine control on objects with this ray, such as manipulating a simple tool or opening a door or a container.
7. Sleep Ray. The targeted creature must succeed on a DC 16 Wisdom saving throw or fall asleep and remain unconscious for 1 minute. The target awakens if it takes damage or another creature takes an action to wake it. This ray has no effect on constructs and undead.
8. Petrification Ray. The targeted creature must make a DC 16 Dexterity saving throw. On a failed save, the creature begins to turn to stone and is restrained. It must repeat the saving throw at the end of its next turn. On a success, the effect ends. On a failure, the creature is petrified until freed by the greater restoration spell or other magic.
9. Enfeeblement Ray. The targeted creature must make a DC 16 Intelligence saving throw. on a failed save, the creature takes 4d8 psychic damage, and is unable to take an action on it's next turn, taking half that damage on a successful throw.
10. Distortion Ray. The targeted creature must make a DC 16 Intelligence saving throw. On a failed save, the creature takes 5d8 psychic damage, and is pushed back 30 feet from the blind beholder and can no longer move in a straight line for 1 minute. The creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.

Bring The World. The Blind Beholder forces whoever has the Book of The World to make a strength saving throw, taking it away from them on a failed throw, and taking away 1 damage dice from the Blind Beholder's next attack on a successful one.

The blind beholder can take 3 legendary actions, using the Eye Ray option below. It can take only one legendary action at a time and only at the end of another creature’s turn. The blind beholder regains spent legendary actions at the start of its turn.

Eye Ray. The beholder uses the next eye ray in his order.