This will be kinda like the shockwave explosion, when used, u will place a giant saw in the air that will slowly fall down and dig into the ground, it will have 2 options:
Saw: what I just explained above
Chain saw: the same but with multiple small saws expanding over a larger area than the normal saw mode but it will have empty spots between the saws
Reason to add: would be cool to have a giant attack that can take down boats and damage multiple people at once in a large radius