This set has gotten me quite a few ragequits:
The Illuminati (Aegislash) @ Lum Berry
Ability: Unaware / Prankster / Magic Bounce
Shiny: Yes
EVs: 248 HP / 84 Def / 176 SpD
Calm Nature
IVs: 0 Atk
- Heal Order
- Substitute / King's Shield / Spiky Shield
- Curse
- Heart Swap / Topsy-Turvy / Whirlwind
This counters Spikers, Parting Shot, Whirlwind, and Spore (Magic Bounce), Shedninja (Curse) as well as Contrarians (Unaware). For other setup sweepers use Prankster.
Aegislash's unique typing walls some of the most common typings (Dragon, Fairy, Fighting) and survives most Fire and Ground-type moves (provided it has Unaware).
Main Checks and Counters
Burns: Although Aegislash does not have any physical type moves, burn is very annoying and will most likely cause you to run out of PP for Heal Order. Therefore an Aromatherapy user is appreciated by it.
Users of Boomburst (especially Diancie-Mega): Although Aegislash is specially defensive, it will take significant damage.
Species Gone Sexual (Mewtwo-Mega-X) @ Sitrus Berry
Ability: Cheek Pouch / Unburden
EVs: 4 HP / 252 Atk / 252 Spe
Jolly Nature
- Belly Drum
- Recycle / Recover
- Extreme Speed
- Precipice Blades / Sucker Punch
With just one setup move, a normally fantastic Mewtwo becomes the One-Punch Man. Use Precipice Blades against Steel types such as Aegislash and Registeel, and use Sucker Punch for priority against Psychic types like Mewtwo Mega Y.
Some matchups against popular Pokemon: (Max HP and Def)
+6 252 Atk Mega Mewtwo X Extreme Speed vs. 252 HP / 252+ Def Mega Rayquaza: 334-394 (80.6 - 95.1%) -- guaranteed 2HKO
+6 252 Atk Mega Mewtwo X Precipice Blades vs. 252 HP / 252+ Def Mega Diancie: 940-1106 (309.2 - 363.8%) -- guaranteed OHKO
+6 252 Atk Mega Mewtwo X Precipice Blades vs. 252 HP / 252+ Def Registeel: 750-884 (206 - 242.8%) -- guaranteed OHKO
+6 252 Atk Mega Mewtwo X Sucker Punch vs. 252 HP / 252+ Def Lugia: 556-656 (133.6 - 157.6%) -- guaranteed OHKO
252 Atk Mega Mewtwo X Precipice Blades vs. 252 HP / 252+ Def Unaware Aegislash-Shield: 190-224 (58.6 - 69.1%) -- guaranteed 2HKO
(Imposter)
+6 252 Atk Mega Mewtwo X Precipice Blades vs. 252 HP / 252+ Def Mega Mewtwo X: 501-590 (70.1 - 82.6%) -- guaranteed 2HKO
Main Checks and Counters
FakeSpeeds (especially Diancie-Mega): Mewtwo has a noticiable 130 base speed, but even with max EV's in speed and the Jolly Nature, Diancie-Mega outspeeds it and 2HKO's Mewtwo.
Shedninja: With no move to handle Sturdy, Mewtwo is forced to switch out. Be sure to have entry hazards or weather hazards on a teammate.
Anti-Setups: Topsy-Turvy, Unaware, Heart Swap, and moves like Dragon Tail make this set useless.
Imposters: With a 50% chance of you dying, you'd probably want to switch out so you don't get sweeped.
(The only gif I could find)
Purple Rain (Palkia) @ Lum Berry/ Wave Incense / Power Herb
Ability: Mega Launcher / Adaptability
EVs: 248 HP / 252 SpA / 8 SpD
Timid Nature
IVs: 0 Atk
- Rain Dance
- Origin Pulse / Water Spout
- Tail Glow / Quiver Dance / Geomancy
- Recover / Infestation
Palkia has amazing base Sp. Atk at 150. I calculated the power for Origin Pulse powered by STAB, Wave Incense, Mega Launcher, and Rain Dance. (Don't quote me on this) I got a power of whopping 450, with only one setup turn. With just one Tail Glow or Geomancy, it can sweep a whole team.
Some matchups against popular Pokemon:
+3 252 SpA Wave Incense Palkia Origin Pulse vs. 252 HP / 0+ SpD Mega Rayquaza in Rain: 408-481 (98.5 - 116.1%) -- 93.8% chance to OHKO
+3 252 SpA Wave Incense Palkia Origin Pulse vs. 252 HP / 252+ SpD Mega Mewtwo X in Rain: 646-762 (155.2 - 183.1%) -- guaranteed OHKO
+3 252 SpA Wave Incense Palkia Origin Pulse vs. 252 HP / 252+ SpD Mega Mewtwo Y in Rain: 570-672 (137 - 161.5%) -- guaranteed OHKO
+3 252 SpA Wave Incense Palkia Origin Pulse vs. 252 HP / 252+ SpD Aegislash-Shield: 322-381 (99.3 - 117.5%) -- 93.8% chance to OHKO
+3 252 SpA Wave Incense Palkia Origin Pulse vs. 252 HP / 252+ SpD Lugia in Rain: 475-559 (114.1 - 134.3%) -- guaranteed OHKO
+3 252 SpA Wave Incense Palkia Origin Pulse vs. 252 HP / 252+ SpD Registeel in Rain: 484-571 (132.9 - 156.8%) -- guaranteed OHKO
Checks and Counters
Diancie-Mega: Although Diancie is weak to Water, its FakeSpeed Combo is sure to 2HKO.
Rayquaza-Mega: Draco Meteor is scary, especially with Contrary.
Fast Pokemon: Palkia is annoying slow, and can be easily beat if Palkia can't OHKO it.