Goken said:
Sceptile
Blazekin
Manetric
Sceptile: Crunch, Leaf Blade, Thunder Punch, Leech Seed (Crunch/Sub because in BT, it's better to have type coverage over tricks)
Blazekin: Earthquake, Rock Slide/Overheat, Brick Break/Sky Uppercut/Reversal, Overheat/Substitute/Endure (you can go the route of Endure/Reversal or Sub/Reversal, or go all out attacks and attach CB)
Manetric: Don't use it. Its stats are poor compared to Sceptile and Blakekin and you already cover lightning and dark moves w/ Sceptile.
You have double weakness to flying right now, but w/ Manetric you have double weakness to flying AND ground... Sceptile's defenses are very poor in addition to contributing to the double-flying weakness. I would go w/ something using levatate or w/ flying typing... if you want a special sweeper that fits the bill, Lati@s does very well. You also don't have much in the way of a wall, meaning if your opponent gets a sweeper that can hit you faster than you can hit it (or is resistant to your stuff), you fold faster than Superman on laundry day. I would try Blissey or Weezing (obviously depending on which game your playing/what your trading limits are)... possibly even Skarmory, since you already have resistance to lightning w/ Lati@s and double resistance to fire. If you want to keep Sceptile and Blaziken, they're both very good pokemon. However, I would highly recommend some kind of wall in place for your final slot (possibly CursePert)