The wind cannon is a exclusive scrapped tower that is unobtainable. This tower shoots wind at enemies which knocks them back a bit upon impact. This tower is the most cheapest tower in the entire game so far, the tower itself is free to place but unfortunately that doesn't help with it's quite bad stats. The main ability of this tower is to push back enemies for a bit, slowing them down in the process, however they only get slowed a very tiny bit which means that this tower needs to be spammed