User blog comment:Woest/Great Tree Arc and Green Magic/@comment-4829046-20131125080227/@comment-1359322-20131125125312

Mavis once randomly said that fairies lives above the cloud, so Walrod in an attempt to see real fairies created a tree/beanstalk that reaches the sky but upon seeing that there are no fairies there the shock of that reality made Walrod changed into his current looks.