Farel decided it was time to be useful, as much as he could be. He looked at those channeling to the nexus, noticing just how much energy it had lost, how much it would need..
With a smile back to Drossy and a nod at the commander, he took a breath and got a running start toward the nexus. With a flash of energy he dissipated, reappearing on a collision course with its source.
As the young magi entered the nexus there would be a brief flash of of harsh white light- any existing material form stripped away, revealing naught but a humanoid form of energy.
With the aid of his senate sisters and brethren they had successfully restored the nexus.. however, the strain had been far too dire. Within moments, the form had nearly dispersed.
He'd have enough time for a parting farewell. 'For Dalaran...' It was a passing echo, then he was gone.