Well, it is a rare thing for a sorcerer to be able to tap into Lord Hellmaster's power enough to be able to do that. Rezo the red priest could, but he was one of the Five Great Sages. He put the entire kingdom of Taforashia in suspended animation using Lord Hellmaster's power because they were dying of a terrible contagious disease. That way, the disease wouldn't spread, and when a cure could be found, the people could be saved.