farfy has no hope of becoming OU without an Evo, that'll move into the evolution discussion
we could do electrode and i have an idea on how it can be done too
simply give it SR, it'll become an amazing lead
Electrode @ Focus Sash
Hasty/Static
252 Atk/208 Spe/50 SpA
Taunt
Stealth Rock
Thunderbolt
Explosion
He runs just enough speed to outrun neutral base 85 pokes carrying choice scarf, He outspeeds all leads except for Choice Scarf Jirachi's, meaning that he is pretty much guaranteed to set up SR for you, great suicide lead status. More Atk EVs so Explosion is stronger, allowing him to deal one final blow before going out. Thunderbolt is for STAB. Effectively, this is a faster but weaker Azelf. Azelf's big advantage is levitate since a lot of leads are probably going to carry earthquake but that doesn't matter much anyways since Electrode is going to die in 1 hit. Static is there just to hope the opponent gets paralyzed, it's better than nothing.
or another possible set:
Electrode @ Damp Rock
Timid (or Jolly)/Static
252 SpA (or Atk)/248 Spe/10 Def
Rain Dance
Stealth Rock
Taunt
Thunder/Explosion/Light Screen
With this set, he becomes an absolutely beastly lead for Rain Dance teams. Setting up the big hazard, stopping the opponent from doing so, and then setting up Rain Dance for the rest of his team to benefit. Choosing between Thunder and Explosion is entirely up to you, he's not going to survive much past getting up 2 of the 3 support moves, you could put Light Screen there if you want as extra support but it's not recommended. Thunder has perfect accuracy in rain and Explosion is his final blow move. 248 EVs in Spe gives him 415 Spe, the lowest number needed to outrun a positive natured Choice Scarf Nidoqueen and Hitmonchan (it hits 414), it's just so he can outrun everything possible. With this set, Rain Dance becomes even deadlier.