Specials:
= Synthesis + Solarbeam
This move returns virtually unchanged from PM. While charging Sceptile recovers 2% of his heath per second until hitting full charge (we'll say 10 seconds, not sure what is is exactly in PM). Deals a massive amount of damage, and will kill at about 40% but will be very difficult to hit.
Custom 1: Synthesis- No Solarbeam, but Sceptile can now heal 4% per second, more start up and and end lag than normal version
Custom 2: Faster charge, Solarbeam will charge in 6 seconds, but will do much less damage and won't kill until 70-80%. Beam will move slower so it will be harder to hit.
= Energy Ball
This basically functions the same way as Pikachu's custom move "Thunder Shock" but will hit a bit harder and have more range. Normally will only do 6% with minor knock back, but at the end of it's range the ball will explode. If sweet spotted it will do 12% damage and enough vertical knock back to kill offstage at around 120-130%.
Custom 1: Bullet Seed, 5 seeds are shot each dealing 2%. Slightly more range than Energy Ball. Similar hitstun to Megaman's pellets.
Custom 2: Razor Leaf, more range, less lag, and moves faster than all 3. Does 8% same knock back as Greninja's uncharged shurikens.
= Leech Seed
This will function the same way as the Mii Gunner's Grenade Launch B special. The seed will be sent off at an arch and will be very easy to see coming and doge. The longer you hold b the longer the seed will be launched. If landed the seed will open up and vines will wrap around the player, Sceptile's opponent will take 2% damage, and Sceptile will recover 2% for every landed hit by either player. There will be no effect on the player while taking damage but the bulbs on the vines will light up each time. Leech seed will stay active for one minute or until the player dies.
Custom 1: Grass Knot, Sceptile will bend down and lay a grass hazard that will trip players like Diddy's banana. The heavier you character the longer it takes for them to trip and get up.
Custom 2: Stun Spore, Sceptile releases a stun spore directly in front of him with very bad range. Same stun effect as ZSS stun gun.
= Leaf Storm
Damage wise this will function very similar to Charizard's Up-B but won't deal as much damage or kill as early. It will just suck in players from the side, and knock them back at the peak with enough force to kill. It will however have a bit more range, and will be able to be controlled much more. About half way through the animation, you will be able to bend the Leaf Storm at up to a 45 degree angle depending on how much you move the stick. Changing the angle will change the knock back direction but not damage. Multi hit does 2% hits a max of 8 times, final hit does 14% will good knock back.
Custom 1: Vertical Leaf Storm, slightly more range that normal but is not controllable. Same damage as number 1 but can hit a max of 10 times.
Custom 2. Same range as normal but can bend at up to a 90 degree angle half way through. Multi hit still hits 8 times but does 1%-2%-1%-2% instead, final hit does only 10% with less knock back.
Sonic Poke
for this suporrting thread of Sceptile! Thanks to every supporter for the Forest Master, your speculation & appreciation to support the character was joy. 
Sakurai could've easily used Leif but he added Roy because a 2nd party company told him to market Roy.
There better be some kind of solar healing mechanic to Treecko / Grovyle / Sceptile / MSceptile for this, or else my thoughts on this breaks Sceptile as a whole.