Metal blade has so many setups & uses, it is honestly amazing.
Force tech situations, gimp, 2 infinites, strong, good hitstun, many many setups, Z-cancelling gives it even more uses as it's an attack with no lag., etc.
Side-special is literally a free attack on shield, grab, free follow up, combo extender, under 40% you can do stuff like grab, cancel the grab by getting hit, perfect shield the rest of the hits (opponent will be hit), then free anything.
Leaf shield can give you a free grab,, help you get back to the ground by having hitboxes around you, gimp certain characters recoveries by simple colliding with them (fox, ness, falcon, etc)
His worst special is his up-b, he doesn't pop up too quickly & you're forced to try to get a sweetspot, so you're probably going to have to travel lower.
Even then that isn't too bad.