My favorite way to play the game for 3 gens (4, 5 and 6) was to weaken the opponent's team and prepare for a Lucario sweep. To that end, I made this team:
Heatran @ Leftovers
Ability: Flash Fire
EVs: 252 HP / 4 SAtk / 252 SDef
Calm Nature
IVs: 0 Atk
- Stealth Rock
- Lava Plume
- Protect
-...