Wow, I wanted something new, and I got something capable of taking on all leads bar taunters, Heatran, and Infernape, though it still gets its job against the latter two. Meet Clefable, the SR lead. This variant is different from others. Let me explain.

Clefable (M) @ Flame Orb
Ability: Magic Guard
EVs: 252 HP/162 Def/96 Spd
Impish nature (+Def, -SAtk)
- Trick
- Stealth Rock
- Protect
- Seismic Toss
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It just hinders Metagross outspeeding the 8 speed EV'd Metagross by 2 points (for those that gets smart and add an extra point) to burn it. SR is what it does reliably being stopped only by Dynamic punch Machamp and taunters. Anything else can't really scratch it. Wish support would be acceptable for this lead. Below are some damage calcs.
Timid roserade's leafstorm 2KO (counting special attak drop)
349 SpAtk vs 216 SpDef & 394 HP (140 Base Power): 244 - 288 (61.93% - 73.10%)
Lead gross's meteor mash (outsped and tricked btw) 2KOs when not ubrned
403 Atk vs 244 Def & 394 HP (100 Base Power): 178 - 210 (45.18% - 53.30%)
When burned
403 Atk vs 244 Def & 394 HP (100 Base Power): 90 - 106 (22.84% - 26.90%)
Lead ape's CC never OHKOs
260 Atk vs 244 Def & 394 HP (120 Base Power): 276 - 326 (70.05% - 82.74%)
Azelf's psychic 3KOs
349 Atk vs 216 Def & 394 HP (90 Base Power): 157 - 186 (39.85% - 47.21%)
As you can see, it fares well against many of the top leads with protect activating the burn preventing status leads from ruining your fun. If you save your FO for later you might even catch something like Scizor on the switch, though it's unlikely. The bulk provided by these EVs is just amazing considering the amount of damage most physical attacks like Scizor's U-turn will do.