Mega Manectric is easily an underrated mega. While most teams rely on Thundurus (or shitty Offensive Zapdos sets), I spent my mega slot on MManec. This, if you didn't know, shits on all forms of Hyper Offense WITHOUT a Scarfed Ground type (common for beating MCharX). Mega Manectric surely doesnt have a great movepool, but it has just enough moves to make it great. Also, it guarantees beating any type of (M)Gyarados at +1, outspeeding, and OHKO'ing :]

Volt Switch: This is an easily spammed move against any type of team without a ground type, or a healthy ground type at that. This can potentially kill a Thundurus after SR and 2 round of LO recoil (I have to get a max roll). Also, coupled with Intimidate, Volt Switch makes a nice way to switch out vs threatening mons that MManectric cannot beat 1v1, but can Volt Switch on (Conk, CharX, Healthy Lati@s, Heatran, MVenu, SpD Rotom-W, (M)TTar, MGardevoir), allowing me to use another mon to check them.

Thunderbolt: Since Volt Switch isn't the strongest move ever, I opted for TBolt (lol what else can I use, Spark?) to deal more notable damage. This can kill (or revenge kill) many spooky threats, such as CharY, AV Torn-T, MPinsir, Suicune (if not boosted past +2), and Azumarill (bar healthy AVest variants). Just a really strong move.

HP Ice: Kills anything x4 weak to it. Since TBolt (if does neutral damage) will do more damage than a x2 effective HP Ice (135 STAB TBolt vs 120 HP Ice), this move really doesnt see much use outside of revenge killing a Garchomp, Dragonite, Landorus/-T, GLiscor, etc.

Overheat: This was needed back in the Aegislash/MMawile Metagame, to be able to practically prevent a sweep from either of the two, while usually sacrificing my mega in return. Coupled with Volt Switch, this move is slightly easier to use, thanks to having the ability to switch out after the -2 SpA drop. Also, it OHKO's Excadrill, whereas Flamethrower does not.