Astral Arm

After speaking a command word, a astral replica of the caster's arm appears. The arm is positioned anywhere on the caster's body that they choose. While the Astral Arm is active, as a bonus action, you may perform one of the following actions. Make an Unarmed Attack, Cast a cantrip at its lowest level (so a cantrip like firebolt would do 1d10, even if you were 17th level it would still only do 1d10), or interact with an object in range (Such as using a magic item or interacting with the environment). If the Astral Arm is somehow destroyed or cut off, the spell ends and the caster takes 1d6 physic damage.