Hello Teambuilders, this is my first smogon post so if the formatting is off, apologies in advance. The mon I want to call attention to is Lucario, specifically, this set:
Lucario @ Life Orb
Ability: Justified
EVs: 252 SpA / 4 SpD / 252 Spe
Modest Nature
-Nasty Plot
-Vacuum Wave
-Flash Cannon
-Dark Pulse
Why this set? With the introduction of Excadrill, Hydreigon, Skarmory, and the typical UU threats of Aegislash, Krookodile, and Jirachi, Lucario can OHKO or 2HKO most if not every mon in UU except Chansey at +2. Otherwise, Fighting, Steel, and Dark form neutral coverage for any mon that comes its way.
Situationally, this Lucario set would function best as a late game cleaner. Priority Vacuum Wave is often slept on, with Lucario being the strongest user of the move with a 115 SpA stat and STAB. While the move itself isn't strong (coming in at 40BP), the priority is important for a mon that clocks in at 279 Speed. What team would work around this mon? Thank you in advance!

Lucario @ Life Orb
Ability: Justified
EVs: 252 SpA / 4 SpD / 252 Spe
Modest Nature
-Nasty Plot
-Vacuum Wave
-Flash Cannon
-Dark Pulse
Why this set? With the introduction of Excadrill, Hydreigon, Skarmory, and the typical UU threats of Aegislash, Krookodile, and Jirachi, Lucario can OHKO or 2HKO most if not every mon in UU except Chansey at +2. Otherwise, Fighting, Steel, and Dark form neutral coverage for any mon that comes its way.
Situationally, this Lucario set would function best as a late game cleaner. Priority Vacuum Wave is often slept on, with Lucario being the strongest user of the move with a 115 SpA stat and STAB. While the move itself isn't strong (coming in at 40BP), the priority is important for a mon that clocks in at 279 Speed. What team would work around this mon? Thank you in advance!