Hall of Infinite Doors

You pick up the sword and barely manage to dive out of the way of a small ball of fire. You land on your feet and face the dragon, then hear a mighty explosion. You turn around to see a huge building tower of smoke from where the fire ball hit and notice a huge blackened crater has been made from it, almost touching your foot.

"No... way..." then all around the crater cracks appear, splitting the beautiful white marble of the floor and extending towards you. You jump back as the cracks grow and grow, then barely dive out of the way of yet another fire ball which hits the ground and splits it open. You run from the widening cracks all around.

"You're destroying the place!!" you yell, then fall through a giant crack into the abyss below...