I think CB ninjask would be kinda cool, just spam u-turn and scout stuff out, bring in magneton if they go to skarm etc. It's also a solid check to any celebi as with an adamant nature, uturn ohkos even max defense variants. Also does over 70% to tyranitar so might force it to run more speed so it isn't outsped at +2 (jolly ninjask will always outspeed +2 adamant tyranitar though). It still lacks power though, and doesn't really learn any powerful moves to make up for it, also once people realize that skarmory can't counter ninjask then it loses a lot of its effectiveness. Still a momentum grabber that can throw out a decently powerful uturn isn't bad. Not sure if "not bad" is good enough for people to use it though. Also I feel like leech seed celebi could make decent use of it on double trap teams, similar to baton pass for trapping skarms and stuff, except now if opposing celebi try and switch in to absorb leech seeds, or even more importantly if tyranitar tries to come in, they get put in to dugtrio range.