Man, it's a great set, and not sure why it's not on site to be honest.
RAWR!
[SET]
name: Protect
move 1: Protect
move 2: Close Combat
move 3: Stone Edge
move 4: Swords Dance / X-Scissor / Quick Attack
item: Life Orb
nature: Jolly
evs: 4 HP / 252 Atk / 252 Spe
Why this deserves to be on site?

RAWR!
[SET]
name: Protect
move 1: Protect
move 2: Close Combat
move 3: Stone Edge
move 4: Swords Dance / X-Scissor / Quick Attack
item: Life Orb
nature: Jolly
evs: 4 HP / 252 Atk / 252 Spe
Why this deserves to be on site?
- most of Terrakion's checks are choiced in some form, whether they be Scarfed or Banded.
- Protect eases prediction on what the opponent wants to do. It also punishes people who make over predictions (Scizor locking itself into U-Turn instead of Bullet Punch)
- Is a pretty good answer to most Volt-Turning, since most people spam Volt Switch / U-Turn instead of going for the kill. Also scouts for items on some Pokemon after SR (leftovers on Rotom) so Terrakion has more information on what it can and can't handle.
- Protect also adds that mental question of "since he knows what I am locked into, will he switch now?", meaning you can try to predict switches and eliminate opposing counters.
- Close Combat rocks Scizor thinking it can just U-Turn expecting a switch, or something else gets rocked by Close Combat
- Stone Edge sucks
- SD makes you on steriods. X-Scissor is to catch Celebi / Latias switch-ins. Quick Attack for priority.
- Because this Terrakion is utilizing Protect, it works well with a defensive core that can handle everything that threatens it once it figures out the opponent's move choice.
- Skarmory handles Scizor locked into Bullet Punch and can start setting up Spikes, as well as most physical attackers.
- Jirachi / Heatran handles the fast Dragons (Latios) and also help for Celebi
- Tyranitar pursuit traps annoying Pokemon like Latios and Gengar
- Gastrodon walls most special attackers (scarfed Water-type moves)
- Gliscor can handle choiced Fighting-type attacks (Scarfed Terrakion)
- Magnezone makes for a great teammate. Although it shares common weaknesses, it deters Scizor from going for Bullet Punch
- Rotom-W makes a good teammate, resisting Bullet Punch and being immune to Earthquake while being able to Volt Switch as the opponent is forced to switch their Choice locked Pokemon out.
- Earthquake can be used if you are Toxicroak weak.
- Rock Slide > Stone Edge for accuracy, but the loss in Power is really not worth it.
- Leftovers can be used over Life Orb for longevity.
- Needs to be wary of Pokemon bluffing a choiced Item.