No, Garchomp is too fast, and it can OHKO Sceptile after a Swords Dance.
Chat with our AI personalities
if your sceptile knows slam useit overand over again
i'd recomend using a grass type like sceptile or ludicolo but if you choose sceptile, watch out! or ice beam could do some great damage
make your floatzel learn icebeam by TM but level it up first because her garchomp has giga impact.
You could easily beat the champion, Cynthia. About half your party will be knocked out, but if you can kill the Garchomp, you can for sure beat her. She has a spiritomb, a gastrodon, a milotic, a garchomp,and a lucario.
Any powerful grass-type Pokemon for example cacturne, Roselia, breloom, shiftry, tropius, sceptile.... Just make sure it's at a reasonable level and has good grass moves.... Have fun!