The Vortex, is the summoning of some combatuids through an Astral Gate by Nessajah. During the Last Battle on Ardera, when Black Dragons and Korvonok override the forces of Ardera, Nessajah creates an Astral Gate to summon what she can to withstand for a while. The summoned combatuids are the ones which were stationed at Kavais right before the Great War on Rhea as well as the transgated ones.