Forever Evil Puns

There was an evil wizard who hated mathematics. One day he decided that he would end math once and for all, by capturing the 10 digits, and locking the away forever in his secret prison. So he cast his spell, and all the digits, from 0 to 9 were under his influence. He put them in his magic sack and rode off to the prison. When he reached the prison, he opened the sack. To his horror, there were not 10, but 9 digits there. After searching thoroughly he realized that...it was the 1 that got away.