Forge already had the link device activated and the painkillers he readied were injected to help Sage with the pain, medication specifically for metahumans that was more potent to be more effective on mutant DNA. "You're gonna be okay Tessa, hopefully you won't be mad at me for what I'm about to do when you come to."
The elder technopath then resorted to drawing on his shamanistic powers, something he very rarely did. The lights all over the school flickered, electronics acted strangely and the sound of the spirit drums could be heard from anywhere in the building though they were most noticeable in the Medbay as Forge was chanting and using the silvery dust he carried for such uses.
Forge drew as much suffering away from her as he could and changing it into raw energy which he then rerouted through the batteries in his workshop knowing full well this exchange would exact a heavy toll on him and might permanently burn out his X gene leaving him a crippled human not to mention this being the most pain he's ever experienced in his life.
When the exchange was finished Forge collapsed with the hardlight limbs fading and him unable to use any of his powers, steam billowing from where the hardlight prosthetics had been. He was still awake and coherent but until he rested he had no powers that weren't synthetic. "So that's how the reboot feels. Dear God..."