In considering
Mega Aggron's move to B-, which I support, I'd like people to consider some set diversity that's often ignored. I usually run an offensive set that goes something like this:
Aggron @ Aggronite
Ability: Rock Head
EVs: 252 Atk / 4 SDef / 252 Spd
Adamant Nature
- Heavy Slam/Iron Head
- Head Smash
- Earthquake
- Rock Polish
This set has a few advantages to make it viable:
- Your setup is hard to predict since most people expect the tank/support set.
- It takes advantage of unevolved Aggron's Ability and STAB with Head Smash. A key to using this set is NOT mega evolving until you have to, allowing regular Aggron to spam Head Smash until your opponent sends out an answer. This can also confuse your opponent into thinking you are not holding Aggronite especially if you have another Pokemon capable of mega evolving on your team.
- Mega Aggron's immense natural bulk allows it to tank hits after setting up, allowing it to 2 or even 3HKO threats that it now outspeeds and are incapable of taking it out quickly. This is its major niche over more typical set up sweepers. While Aggron has less power, it has more natural staying power than most. By way of demonstration: 252+ Atk Tough Claws Mega Charizard X Flare Blitz vs. 0 HP / 0 Def Filter Mega Aggron: 204-243 (72.5 - 86.4%) -- guaranteed 2HKO. Looking at the top of the viability list it should be clear that a fast Aggron can power through a huge chunk of its threats and will find ample opportunity to set up a polish. This means that in regular conditions you can use Aggron to force out a Pokemon that your opponent has to sacrifice to bring it down, blasting a hole in their team, or do some late game sweeping when the Pokemon that could stop it in combination are already removed and your opponent has nothing that can hit hard enough or take a hit.
Of course there are also the disadvantages:
- Weaker than typical set up sweepers.
- The advantage of Head Smash mentioned above is a double-edged sword since after mega evolving it compromises Aggron's main niche: survivability.
- The ubiquitous "it takes up my mega slot" problem, which means that you can't double it with the best set up sweepers in the tier.
The reason I'm drawing attention to this set isn't because I think this set
alone is why Aggron should move up, but because this set in conjunction with its other viable sets raises its viability by adding the element of versatility and unpredictability while spotlighting Aggron's potential offensive presence. This easily merit's Aggron a place among mons like Absol, Aerodactyl, and Rhyperior who often can only do a single role comparatively well.