The paladins were stronger and more determined than Geros had given them credit for, and he recognized this, but was none the less put off by it. These men were fighting like the heavens themselves depended on it, not some gemstone of questionable value. 

"Perhaps their general gives them this determination? Bah, it matters little." Geros mumbled to himself. While stronger than anticipated the enemy still could only move normally, even with the walls breached he still had time to complete the summoning, he would have the results of this new spell by the time the paladins took the base of the tower. 

----- ((When suddenly)) -----

Hell-fire and slag exploded out of the room and over the balcony, shock wave shaking the battle and magic quickly consuming the entire upper half of the stone structure. Where the stones burned a darkness flowed, warped, and deposed reality. The base of the tower collapsed under the strain but everything from the room up remained floating even as the debris gathered into miniature, fluctuating hell portals. Demons climbed into reality, gathering beneath the now demonic floating tower. Where the balcony had been there was now an eye.

----- ((Meanwhile)) -----

Geros strained to sit up, he wasn't in the tower, in fact he wasn't sure where he was. It looked and felt roughly like one of the hells, but it wasn't one he knew. 

"That ancient scroll did say "surely" instead of "shall not". Guess I owe that student an apology." Geros mused before collapsing.