I find that Mega-Latios works as a great offensive "nuke pivot" (and partner for Swords Dance Talonflame) when using this set.
Talon's Waifu (Latios) (M) @ Latiosite
Ability: Levitate
EVs: 248 HP / 168 SpA / 92 Spe
Modest Nature
- Recover
- Defog
- Psyshock
- Draco Meteor
- 248 HP is to be as bulky as possible while taking less damage from entry hazards.
- A Modest Nature and 168 Special Attack EVs allow you to reach an impressive stat of 437 which is the same as Jolly Mega Pinsir's Attack.
- 92 Speed EVs places you at 279, which allows you to outrun Jolly Mega Heracross, Max Speed Taunt Heatran, Breloom, Stallbreaker Mew, Non-SubTox Gliscor, and Bisharp.
- This set is primarily designed for consistent Defog usage, longevity, and to take advantage of M-Latios' above average bulk and excellent resistances to Fire, Water, Grass, Electric, and Fighting. (Keldeo will cry even more lol)
- However, it can also be used as a surprise check to some threats if near full health.
A Few Calcs (I've modified Latios' stats to mirror the Mega Evolution)
Bisharp
252+ Atk Bisharp Sucker Punch vs. 248 HP / 0 Def Latios: 282-332 (77.6 - 91.4%) -- guaranteed 2HKO
168+ SpA Latios Draco Meteor vs. 4 HP / 0 SpD Bisharp: 174-204 (63.9 - 75%) -- guaranteed 2HKO
Greninja
252 SpA Life Orb Protean Greninja Ice Beam vs. 248 HP / 0 SpD Latios: 281-330 (77.4 - 90.9%) -- guaranteed 2HKO)
252 SpA Life Orb Greninja Dark Pulse vs. 248 HP / 0 SpD Latios: 250-296 (68.8 - 81.5%) -- guaranteed 2HKO
(Obvious OHKO with Draco Meteor)
***
-Because of that strong 437 Special Attack, this Latios can also cleanup once his threats are weakened/taken care of and is by no means a sitting duck. He has great synergy with Swords Dance Talonflame because the bird OHKO's many of the faster threats that this Latios can't handle (please don't try getting this thing to tank an M-Garde Hyper Voice, Beedrill U-Turn, or Latias Draco Meteor, it won't.) This Latios appreciates support from teammates that can pick-off faster threats, and in return, it will sponge elemental hits and nuke things with Draco Meteor.
Actually I sort of lied about Beedrill...
252 Atk Adaptability Beedrill U-turn vs. 248 HP / 0 Def Latios: 340-404 (93.6 - 111.2%) -- 62.5% chance to OHKO. Eh maybe it can tank it...