Those are some fairly restricting requirements, so it might take you a while to find a good one. Do you have it set to 3 keypresses?
Check out Smogon's new Doubles
Black 2 FC:
My Pokécheck Pokémon
RNG is kind of like firing a gun. Why shoot blindly in every direction until you're lucky enough to hit the target when you can just take the time to aim properly and hit it with one shot?