So I decided to throw together a team with Mega-Ampharos on it when Pokepank opened up.
I'm was having a TON of problems with an offensive set. Now that Pokebank OU is roaring away, and 5th gen OU monsters are running rampant, and even 5th gen Ubers like Genesect, Deoxys and Excadrill are being allowed to play, Amphy is just getting shut down. I find a Garchomp, Mamoswine, Excadrill or Landorus-T on almost every team. Without Trick Room support, even MAmpharos bulk can't handle these fast and versatile threats. But, like
effyouzion said, it's a great counter to Talonflame and Rotom-- one of the best I've seen, and great with Talonflame's face being everywhere.
Regardless, here's the Amphy I use NOW
Ampharos @ Ampharosite
Ability: Static
EVs: 252 HP / 252 Def / 4 Def
Bold Nature
- Thunderbolt
- Hidden Power [Ice]
- Dragon Pulse
- Focus Blast/Heal bell
The bulk is what drives me over any other mega-- because even with Mega Kan and Gengar gone; Mega Lucario, Medicham, and Manectric are faster, and have more coverage. Each of them are incredibly frail, though, and cannot handle any threats. Disregarding this things monstrosity in trick room, I did some common calculations to try and get a feel for what it's like
252+ Atk Choice Band Huge Power Azumarill Play Rough vs. 252 HP / 252+ Def Mega Ampharos: 372-440 (96.8 - 114.5%) -- 81.3% chance to OHKO
This is the creme de la creme. Choice Band Huge Power Max attack, has an 81.3% chance to OHKO Amphy. But let's put it in a different item, more likely nowadays due to frequent switchouts and a lot of Azumarill counters
252+ Atk Huge Power Azumarill Play Rough vs. 252 HP / 252+ Def Mega Ampharos: 252-296 (65.6 - 77%) -- guaranteed 2HKO
Now my other calcs.
252 Atk Landorus-T Earthquake vs. 252 HP / 252+ Def Mega Ampharos: 248-294 (64.5 - 76.5%) -- guaranteed 2HKO
252+ Atk Mamoswine Earthquake vs. 252 HP / 252+ Def Mega Ampharos: 252-296 (65.6 - 77%) -- guaranteed 2HKO
252+ Atk Mold Breaker Excadrill Earthquake vs. 252 HP / 252+ Def Mega Ampharos: 258-306 (67.1 - 79.6%) -- guaranteed 2HKO
252 Atk Garchomp Earthquake vs. 252 HP / 252+ Def Mega Ampharos: 228-270 (59.3 - 70.3%) -- guaranteed 2HKO
252 Atk Garchomp Outrage vs. 252 HP / 252+ Def Mega Ampharos: 272-324 (70.8 - 84.3%) -- guaranteed 2HKO
In a defensive thread, Ampharos is a monster-- taking (not enjoying, but taking) every terrible hit it possibly can, and having at least one OHKO move to return (HP Ice, Focus Blast, Focus Blast and Dragon Pulse respectively)
With this things terrible speed, I'd rather not rely on Trick Room-- Why can't this thing work as it's own tank? Especially with mold Breaker
You can use a Mega-Amphy with Deo-D as a Trick Room Lead, and then pivoting into Mamphy. The problem with that is proper predict from the opponent. I still think this Mega needs tons of support in TR, but when it gets it, it can sweep nicely.
I've also seem some sets as a baton pass ender, with Ninjask passing to Espeon passing to M-Amphy, and that works really well too. That set especially works well with all bulk invested.
While a lot of these could have been done PRE-Pokebank, I've decided to wait until prevalent threats started getting really common before worrying about what set works best.
DEFENSIVE AMPHY FOR THE WIN.