Bluetooth Beast

Interference Aura. The Bluetooth Beast emits a subtle disruptive signal in a 30-foot radius. Creatures within the aura that attempt to communicate telepathically, cast a spell requiring verbal components, or use magical items to communicate must succeed on a DC 13 Charisma saving throw or have the attempt fail.

Static Shift. As a bonus action, the Bluetooth Beast can teleport up to 15 feet to an unoccupied space it can see.

Cling to Surfaces. The Bluetooth Beast can climb difficult surfaces, including upside down on ceilings, without needing to make an ability check.

Bite. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 7 (1d8 + 3) piercing damage. 

Signal Scramble. The Bluetooth Beast targets one creature within 30 feet that it can see. The target must succeed on a DC 13 Wisdom saving throw or have disadvantage on Wisdom (Perception) checks and attack rolls until the end of the Weird Bluetooth Monster’s next turn.

Disrupting Pulse (Recharge 5–6). The Bluetooth Beast emits a burst of psychic interference in a 20-foot radius. Each creature in that area must succeed on a DC 13 Intelligence saving throw or take 10 (3d6) psychic damage and be unable to take reactions until the end of its next turn.