Kchree, kchree, kchree, kchree...

It was a very rhythmic sound, and very mechanical. A sleek, white mechanical walker strode through the forest. It was full of glowing blue lights, too. A crystal adorned the front of the mechanical creation, glowing with a light from within. Attached to the central, open-cockpit pod were four limbs: two arms, two legs. The arms were equipped for the task of planting saplings, with the right arm meant to pull dirt from the ground and then drop it gradually, while the left was designed to place the sapling within the hole. The legs were a lightweight reverse-joint design, and the footprint was 3 concentric horseshoes. 

"How much farther, Vortex?"

"We're on our final approach now."

The energy spirit she called forth during that incident... Vortex. It was hard for Serenity to say whether she gave her the name or not. Whatever the case, Vortex had incredible capabilities Serenity found thrilling that she was, even now, exploring. The spirit could, through the crystal attached to the front of this machine, power and control it. What's more, Vortex could memorize blueprints and utilize any magitech attached to the machine at will. The one thing Vortex seemed to lack was her own desires, which... what was the nature of this entity, in the first place?

The girl rode her mechanical creation in, slowing down and taking more careful steps. Vortex was making small adjustments to avoid stepping on anything, but being careful couldn't hurt. "Hey, am I late?" Serenity smiled from the cockpit and accessed the holographic menu interface installed in the cockpit. She taps it a couple times and the two arms start to disintegrate. The magitech Matter engine built into the central pod was taking them apart and storing the materials for later use. The walker carefully positions itself before bending at the knee joints, lowering the cockpit to the ground and letting Serenity climb down and join the others on foot. As her seat turns and she climbs out, the others can see it's nice and padded.