See, how this little mushroom can destroy a legendary monster Djinn Oshannus.
There is a little trick to follow, all you need is a Lookout monster adjacent to him, it will give him ability to take 1 less damage from any stealth attack..
Watch the battle in Splinterlands, link in the next comment.
Link to the battle..
https://splinterlands.com?p=battle&id=sl_f223b7dd74a064e0f73d2af7014e6e3f&ref=lordshah