Behelder

Calming Presence. The psychic emanations of a content behelder are delightfully soothing. Any creature picking up the behelder must succeed on a DC 12 Charisma saving throw or be subject to the effects of the Calm Emotions spell for as long as they are holding the behelder. A creature can choose to fail the saving throw if it wishes. Calming Presence does not suppress any charmed conditions originating from the behelder.

Familiar. The behelder can serve another creature as a familiar, forming a telepathic bond with its willing master, provided that the master is at least a 3rd-level spellcaster. While bonded, the master can sense what the behelder senses as log as they are within 1 mile of each other. Harming or failing to hold the behelder once per day will break this bond.

Bite. Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 2 (1d4) piercing damage. 

Eye Ray. The behelder shoots one of the following magical eye rays at a target it can see within 60 feet of it.

1. Charm Ray. The targeted create must succeed on a DC 12 Charisma saving throw or be charmed by the behelder for 1 hour. Charmed creatures will do their best to pick up and hold the behelder for the duration, and automatically fail their saving throw against the behelder's Calming Presence ability.

2. Fire Ray. The targeted creature must succeed on a DC 12 Dexterity Saving Throw or take 7 (2d6) fire damage.