engineer problem?

Is there a demoman destorying your building and forcing you to rebuild? then get yourself this. as a engineer main i tend to get face a lot demoman and my style revolve around playing baiting fish man. so normal when one person get killed by a random sentry, people tend to change class to spy or demoman and then try to destory it. but i bait them knowing they will do this , so i crit them instead. also it fun hunting down demoman and spy who destroy my sentry. also it has a cool name and tag.
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