I have never been a big anti-lead person, but this one can get rid of the other lead, set up rocks, AND get rid of rocks. Donphan's typing, stats, and moves are all perfect in conjunction. So here's my set:
http://www.smogon.com/dp/pokemon/donphan
[SET]
name: OU Anti-Lead
move 1: Earthquake
move 2: Stone Edge
move 3: Rapid Spin
move 4: Ice Shard/Stealth Rock
item: Life Orb/Lum Berry
nature: Adamant
evs:252 HP / 252 Atk / 4 Spe
Why this set deserves to be on-site:
-This is unlike most other leads
-Currently no set like this on Donphan
-Keeps out rocks on your side
-Can still work late game
Additional Comments:
-Outclasses Starmie in physical powerand bulk, typing, SR, priority, and coverage.
-Outclassed by Starmie in speed, and special.
-Beats almost all common leads, which includes Aerodactyl, Azelf, Infernape, Jirachi, Ninjask, Machamp, and Metagross. Roserade, Hippowdon and Swampert being the three in the top 10 that aren't beaten.
-Ice Shard is the preferred choice to hit Ninjask and Gliscor or whatever is switched in after beating the opponent's lead. But SR can be useful for obvious reasons.
-Evs allow Mixpert leads to be unable to OHKO Donphan, and Machamp leads are unable to 2HKO it. The max attack allows many OHKO's and aren't useful anywhere else.
-Adamant nature is required for it to work at all, so Impish isn't a good idea.
-Life Orb vs Lum berry depends on if you want more power or the safety from sleep leads (Roserade...).
Teammates and Counters:
-Being a lead, team mates aren't very useful, but a Blissey would help as to absorb special attacks and cause switches.
-Also a grass abuser could also be used for Swampert, so Roserade could be useful to add toxic spikes to the mix for stall teams. It can also absorb toxic spikes and fight and defend specially.
-His counters are Swampert because even when it can't OHKO Donphan, it is still a potential wall to Donphan. The best thing to do is to switch immediately SR.
-Smeargle and Roserade can be threats without a sleep absorber, even though they are both OHKO'd by Earthquake.
-Bronzong, Empoleon, and Froslass leads can also be scary, so just switch to a set-up sweeper like Gyarados and then they can't do anything about it.
http://www.smogon.com/dp/pokemon/donphan

[SET]
name: OU Anti-Lead
move 1: Earthquake
move 2: Stone Edge
move 3: Rapid Spin
move 4: Ice Shard/Stealth Rock
item: Life Orb/Lum Berry
nature: Adamant
evs:252 HP / 252 Atk / 4 Spe
Why this set deserves to be on-site:
-This is unlike most other leads
-Currently no set like this on Donphan
-Keeps out rocks on your side
-Can still work late game
Additional Comments:
-Outclasses Starmie in physical powerand bulk, typing, SR, priority, and coverage.
-Outclassed by Starmie in speed, and special.
-Beats almost all common leads, which includes Aerodactyl, Azelf, Infernape, Jirachi, Ninjask, Machamp, and Metagross. Roserade, Hippowdon and Swampert being the three in the top 10 that aren't beaten.
-Ice Shard is the preferred choice to hit Ninjask and Gliscor or whatever is switched in after beating the opponent's lead. But SR can be useful for obvious reasons.
-Evs allow Mixpert leads to be unable to OHKO Donphan, and Machamp leads are unable to 2HKO it. The max attack allows many OHKO's and aren't useful anywhere else.
-Adamant nature is required for it to work at all, so Impish isn't a good idea.
-Life Orb vs Lum berry depends on if you want more power or the safety from sleep leads (Roserade...).
Teammates and Counters:
-Being a lead, team mates aren't very useful, but a Blissey would help as to absorb special attacks and cause switches.
-Also a grass abuser could also be used for Swampert, so Roserade could be useful to add toxic spikes to the mix for stall teams. It can also absorb toxic spikes and fight and defend specially.
-His counters are Swampert because even when it can't OHKO Donphan, it is still a potential wall to Donphan. The best thing to do is to switch immediately SR.
-Smeargle and Roserade can be threats without a sleep absorber, even though they are both OHKO'd by Earthquake.
-Bronzong, Empoleon, and Froslass leads can also be scary, so just switch to a set-up sweeper like Gyarados and then they can't do anything about it.