Telekinetic Spirit Prosthectic Arm is an ability used by Finn in "The Tower." It was been summoned be Finn's wish of up to the space for punch his father and steal his favorite arm. It also has the ability of become larger and thorny when in contact with something. It can control blocks of constructing material via-psychic.
- It is likely based on the real-world phenomenon of phantom limb syndrome, in which an amputee continues to feel pain and other sensations from a missing limb as if it were still attached to their body.