Headcanon is fun :D
I can't change it. I know it's a dream, but that doesn't improve things.
Thank you, old friend. *He takes the Doctor's hand.* It's the last day of the War, Doctor. Somewhere far above you're locking it all away. But down here . . . well.
*And they're in a park, or what was a park, outside the Council chambers. The grass is on fire, the occasional corpse is lying around, and a vortex of energy is forming. Near the vortex is a torn sash and a bloody robe.* Rassilon's. No more than he deserved, really--want to watch him die? I can show you his death, Doctor.