WHOADER. No Fire, Ground, or Fighting coverage? You cover everything Lucario resists.
Lucario (M) @ Air Balloon
EVs: 128 Atk / 128 SAtk / 252 Spd
Naive Nature (+Spd, -SDef)
- ExtremeSpeed / Earthquake
- Aura Sphere
- Hi Jump Kick
ExtremeSpeed has reliable priority, but Earthquake covers fighting and fire. Your call. Psychic also covers fighting, and is a great special move. Aura Sphere is STAB plus has great accuracy. High Jump Kick is what does the job of the sweeping. STAB.
Ok, now we look at other things. Air Balloon saves you from E-Quake.
With those EVs, plus fully boosted +6 stats due to BP, here is what you get:
281 Hit Points
1192 Special Attack
632 Special Defense
With STAB, you sweep whole teams.
This set needs those boosts, and is amazing. Trust me. Fighting will demolish. Psychic will come very close to an OHKO on ghosts, so no need to worry.