So I noticed that Sceptile isn't getting an awful lot of love, because its power level isn't through the roof. But the reason I suggested Grass/Dragon Sceptile isn't for its power but for its versatility. With epic Speed, reasonable Sp Atk and usable (just) attack, Sceptile has the power to use any of the 3 choice items. He can act as a specially offensive revenge killer, and Set up physical sweeper, a mixed attacker, and hell he even has enough speed to pull off a neat SubSeed set.
The new typing gives him three 4x resistances, allowing him to find solid switch in and set up opportunities, even with his poor bulk. At +2 Sceptile actually hits reasonably hard physically allowing him to abuse his slightly better physical move pool. It also gives Sceptile STAB on dragon pulse, dragon claw and outrage, all of which he can abuse nicely. Grass/Dragon is actually fairly decent STAB, however walled by steel. Mind you, Sceptile can still hit steels with Focus Blast and HP Fire specially or Drain Punch / Brick Break and Earthquake physically. If nothing else this steel problem could possibly make Sceptile a good partner for Magnezone.
Also he has Giga Drain, Drain Punch and Leech Seed for offensive recovery. Unburden lets him take advantage of weak knock offs and pull of some interesting sets such as, White Herb+Leaf Storm, or perhaps an acrobatics set if flying gem ever comes back out.
He now destroys two of his hardest past counters, Lati@s & Lati0s.
252+ SpA Life Orb Sceptile Dragon Pulse vs. 252 HP / 4 SpD Latias: 273-322 (75 - 88.4%) -- guaranteed 2HKO
+2 252+ Atk Life Orb Sceptile Outrage vs. 252 HP / 0 Def Latias: 915-1079 (251.3 - 296.4%) -- guaranteed OHKO
252 SpA Life Orb Sceptile Dragon Pulse vs. 4 HP / 0 SpD Latios: 289-343 (95.6 - 113.5%) -- 75% chance to OHKO
+2 252 Atk Life Orb Sceptile Outrage vs. 4 HP / 0 Def Latios: 920-1084 (304.6 - 358.9%) -- guaranteed OHKO
I apologize in advance for the negative-nancy attitude here:
Grass/Dragon coverage is stopped dead in its tracks by Steel-types, so his only option to hit them with on the special side is Focus Blast or HP Fire, and even then, Steel-types like Aegislash, Mega Mawile, and Skarmory are still gonna take Sceptile's hits and go about their business like they do everyday.
Here is how he fares against a few common steal types.
+2 252+ Atk Life Orb Sceptile Earthquake vs. 252 HP / 4 Def Aegislash-Shield: 328-387 (101.2 - 119.4%) -- guaranteed OHKO
252+ SpA Life Orb Sceptile Hidden Power Fire vs. 252 HP / 4 SpD Skarmory: 216-255 (64.6 - 76.3%) -- guaranteed 2HKO
+2 252+ Atk Life Orb Sceptile Earthquake vs. 252 HP / 0 Def Mega Mawile: 385-455 (126.6 - 149.6%) -- guaranteed OHKO
252+ SpA Life Orb Sceptile Hidden Power Fire vs. 252 HP / 0 SpD Mega Mawile: 169-200 (55.5 - 65.7%) -- guaranteed 2HKO
Obviously Sceptile still has his fair share of cons but he now has enough pros to balance them out and become a solid, versatile threat in OU. So please don't sell stuff short too early. Volt Absorb Jellicent doesn't seem too crash hot atm either but I'm sure that someone soon is gonna post a list of all the pokes it now walls with the added immunity, making him seem a lot better too.
Oh and as for my other suggestion, however I still think Magic Guard will greatly help Celebi (Especially offensive sets with life orb), when I suggested it I assumed that Magic Guard granted it an immunity to Perish Song giving Celebi a nice niche, but I now know it doesn't. #Sad :(