Pretty fun! I think would be funny if the viewers also lie about having mines around when there's actually no mines around.
For the decoy item that shoots in 4 direction, it felt like there's not much use to it compared to the EMP item. The EMP item just feels way more cost efficient for the number of mines it can potentially clear. The decoy item also does not work well when multiple mines overlap each other, I think those 2 items can be merged together since they essentially function the same. You could perhaps replace the decoy with a marker item that lets you place markets on the map so you can kinda know this area has been cleared, so you can backtrack if need to.