Telekinetic Spirit Prosthectic Arm is an ability used by Finn in "The Tower." It was summoned due to Finn's wish of reaching space to find and punch his father, and steal his favorite arm. It also has the ability to become larger and spiked when it comes in contact with something. It can control blocks of construction material via psychic energy.
- 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.