Sceptile

Great League: 2 / 5

Sceptile is one of many Grass-type contenders in Great League. With an offensive stat distribution and somewhat vulnerable mono-Grass-typing, Sceptile is one of the more fragile and riskier picks. What Sceptile does have to offer is the fastest Leaf Blade in the game (tied with Farfetch'd), which lets it pressure shields a bit sooner than any other Grass-type. Access to Frenzy Plant is a nice addition that gives it some extra power, but this doesn't really distinguish Sceptile from its competitors. The lack of bulk is notable however, and if Leaf Blade is taken out of the equation then Sceptile looks more like a squishier Meganium. Overall, not a terrific top-tier pick, though its access to Earthquake and Aerial Ace does give it some coverage in some niche situations. 

Ultra League: 2 / 5

The prevalence of Swampert thanks to its Community Day gives Grass-types some relevancy in Ultra League, and Sceptile is no exception. Since a single 35 energy Leaf Blade is approximately a one-shot (depending on IVs), and Sceptile has the fastest access to it, there is some incentive to bring the forest Pokemon on the roster. Earthquake gives meaningful coverage against the numerous Steel-types in this meta as well, though not enough to deal with Giratina. Overall still a niche pick, but its rating will drop if Swampert isn't involved. 

Master League: 0 / 5

With a max CP of 2757, Sceptile severely lacks the stats needed to do well in Master League. While it can still get wins against Swampert, Groudon, and Kyogre, the lack of stats really holds it back from winning most other fights. Consider other Pokemon instead.