if you go shell smash for speed and stealth rock you can fet around the map easily and clear creeps effectively. You wont be mvp but you can fill a lot of roles effectively (areq denial, scoring, debuffs) if you equop the cursed bangle which inhibits enemy healing when you deal attack based damage then you can disrupt enemies when they retreat to goal (stealth rock deals attack based damage). Pairing with a float stone for even more mobility and attack boost gives you one free item sllt for another carry item. You can stack if you like or add a claw for even higher attack. I like to add a exp share usually since i am laning amd will be around other pkmn most of the match and i hit my level four to evolce early and get rhe power spike there so I don't mjnd sharing exp but mainly crustle is cute so that's the main thing eally