Board Thread:General Discussion/@comment-1875854-20150221232630/@comment-25202104-20150222001122

Or Crystal could be Earth and Yang? That could be what made it able to stop Wood Release. But then Dark Release could be Yin and Yang Release, except it wouldn't be Yin-Yang Release. Steel could actually be a mix of three for the site only, making it Earth, Fire, and Yang/Lightning.