Skore
I think an adamant nature would be much better on a rock polish set, it will still outspeed all scarfers after a rock polish and you're not gonna sweep anything with a jolly non boosted Terrakion. It may lose some immediate revenge killing prowess against max speed positive natured 95+ but I think it is well worth it.
Terrakion @ Lum Berry
Trait: Justified
EVs: 4 HP / 252 Atk / 252 Spd
Jolly Nature (+Spd, -SAtk)
- Close Combat
- X-Scissor
- Stone Edge
- Rock Polish
Rock Polish Terrakion is a great partner for meloetta because it can come in on anything that heatran and celebi have and on the switch, it can rock polish.
Scenario 1: Terrakion switches in on a T-wave or a NP from celebi. Lum berry takes effect (on the T-wave) and Terrakion outspeeds and has an 87.5% chance to OHKO with X-scissor.
Scenario 2: Terrakion switches in on a giga drain from celebi which can't OHKO even with SR (75.93% - 89.81%). Terrakion outspeeds and has an 87.5% Chance to OHKO with X-scissor
Scenario 3: Terrakion switches in on a lava plume or WoW from heatran. Lum berry takes effect if it hits and Terrakion outspeeds and has an 81.25% chance to OHKo with close combat.
If you predict a switch correctly you can also rock polish to sweep the opposing team. Or just rock polish if a HP fire/non burn lava plume/SR comes you way on the switch. I think the odds of OHKo'ing both of the opponents team are good at the moment. It can also go on to sweep the opposing team because of the ability to outspeed all of the metagame while being able to switch moves. Although there isn't much chance of that as this is a counter this pokemon thread.
I wouldn't say dead weight as Terrakion forces a lot of switches in which a Rock polish can be used. I know they can just choose scizor so rock polish is not always the best option but that is why you can switch out into an appropriate counter which can be implemented into the team like gliscor or magnezone. And if the scizor is coming in, then they have to take a lot from a CC (18.75 chance to OHKO with SR) or a stone edge which cant KO but can take it down to an amount of HP where another poke can come in on the bullet punch and KO it.I know you used this set to keep 3 attacks in order to include X-scissor but non choiced, non sub is dead weight
I really like this, actually. It seems you forgot an ability, though. Which were you thinking? All three can be useful, so you should edit your post with your thoughts ^^
Gliscor @ Flying Gem
252 Atk / 4 Def / 252 Spe
Adamant nature
~Swords Dance
~Substitute
~Earthquake
~Acrobatics