One arm morphs into a twisted tree branch, with your hand forming a dense, knotted fist. Though incapable of holding items, the limb functions as a powerful club, twitching occasionally and capable of sudden growth to strike or crush enemies with force.
You watch as your arm warps into rugged bark, fingers fusing into a thick, knotted fist. The branch twitches unpredictably, and with a thought, it surges outward, stretching and hardening to smash whatever lies ahead.