It would seem everything is going according to plan then!
Wonder how much longer that will last.
Damon coats himself in black fire as well, as a precautionary measure. If something jumps him now, they'll find things getting rather hot for them. He peers inside, his eyes easily piercing the darkness as he keeps an eye for any movement. It would seem rather foolish for someone to run up through the flames, but you never know...
The fire will continue to spread downwards, though it slows down the further away from Damon it gets. So it's probably going to take a little while to flood the whole tower. Still, the highest few sections will be filled with flames quite rapidly.