LOL flash cannon ferro I'm dying XD
Goodra @ Assault Vest
Ability: Sap Sipper
EVs: 248 HP / 252 SpA / 8 SpD
Modest Nature
- Draco Meteor
- Fire Blast
- Sludge Bomb
- Thunderbolt
Power Whip is absorbed via Sap Sipper, Fire Blast undeniably OHKO's, and Ferrothorn's Flash Cannon damage makes its user quit pokemon.
0 SpA Ferrothorn Flash Cannon vs. 252 HP / 4 SpD Assault Vest Goodra: 25-31 (6.5 - 8%) -- possibly the worst move ever
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Also about the "counter" to the mega aggron I posted, I can't help but react:
Flygon@sitrusberry
Ability: levitate
Evs: 252 sp.attk sp. def 252 attk 4
Nature: mild
Earthquake
Dragon dance
Dragon pulse
Sand attack
Lol your Flygon can't even reliably 4HKO Mega Aggron.
4 Atk Flygon Earthquake vs. 248 HP / 8 Def Filter Mega Aggron: 76-91 (22.1 - 26.5%) -- 20% chance to 4HKO
Meanwhile, 0 Atk Mega Aggron Heavy Slam (100 BP) vs. 0 HP / 0- Def Flygon: 193-228 (64.1 - 75.7%) -- guaranteed 2HKO
How is this even called countering? Word of advice, please check via calcs whether the thing you're suggesting is even viable enough to be a counter.