The Tall One

The Tall One is a spirit of the Feywild, whose height appears to be contextual - not bound by mundane physics or ontological inertia.
He may appear to be the height of a giant, yet in the next moment reach up and place a pebble in the sky, among the stars, even though the actual stars are a part of the astral sea, and the entire "infinite sky" of the Feywild lies in between.
He was given this pebble by The Party at the behest of a kitsune who had been contracted by The Rahjs to deliver a crystal containing energy (possibly Karma) to reinforce the spirit seed. It is notable that The Rahjs attempted to prevent her from giving them this pebble by banning her from communicating with them while delivering the crystal. This may imply that the creation of the star is somehow an obstacle to their plans, or they may have been more concerned about her claim that they should distrut the Rahjs, or perhaps something else that she may have said but did not.