Motus, the aspect of Motion, is composed of Aer + Ordo. Its essentia is needed to produce golem bodies, and for various infusions. It can also be centrifuged to yield Ordo.
Motus can be found directly in Doors, Trapdoors, and (with suitable additional mods) Rubber or Bar Rubber. It can also be centrifuged from Bestia, Volatus, or Machina, among other aspects. nicht ganz da die besten nicht immer geht