给定一段英文文本，用不同语法结构的句子重述其中的一个段落。
下面是英文段落：
"The wizard sat in his tower, studying ancient tomes and casting spells. His long white beard was knotted with bits of twigs and leaves that he had collected in his wanderings."
As he studied ancient tomes and cast spells, the wizard with a long white beard knotted with bits of twigs and leaves collected in his wanderings, sat in his tower.