Demon Tentacles

Upon casting, the caster summons eight tentacles that emerge from their back. These tentacles are under the caster's control and can be morphed into one of four distinct forms as part of the spell's casting. Each turn, as a bonus action, the caster can switch the tentacles between these forms:

Offense Form: The tentacles become offensive weapons. As a bonus action or when when the tentacles first take this form, you can make a melee spell attack with the tentacles against a target within 10 feet, dealing 1d6 cold damage on a hit. The ethereal nature of the tentacles makes them especially chilling to the touch.

Defense Form: The tentacles wrap protectively around the caster, providing a +1 bonus to AC. This form represents the tentacles acting as a shield, absorbing or deflecting attacks.

Utility Form: The tentacles become tools of utility. As a bonus action or when the teritacle first take this form, the caster can use the tentacles to pull an ally within 10 feet towards them. This movement does not provoke opportunity attacks. Additionally, in this form, the caster can use the tentacles to gain a climbing speed of 15. If you change the tentacles form while climbing, you fall.

Invisibility Form: You turn your tentacles invisible. You can use any of the forms while your tentacles are invisible.