I'm surprised no one has mentioned the great synergy between regeneration and substitute, especially with baton pass. Powerful and fast sweeper that can pass free subs? Yes please.
Kojondo @ salac/leftovers
Jolly
252 att/252 speed/6 def
Regeneration
Hi jump kick/Reversal
Substitute
Swords dance/Baton pass/Stone edge/Taunt
Swords dance/Baton pass/Stone edge/Taunt
Substitute abuse set with a ton of variants. The choice between HJK and reversal can greatly change how the entire set works; HJK has more immediate power and missing isn't much of a problem with renegeration healing you back up to 80% when switching out (assuming you were full to begin) and reversal having a massive potential base power but requiring a fair bit of setup. Substitute is the only definite from this set as it serves several purposes. It can be used to scout, sub down to salac/reversal range, and with regeneration healing more then substitute takes, you can pass what are essentially free subs should you opt to take baton pass. The last 2 slots are a matter of preference, swords dance for more power and more boosts to pass, baton pass for passing free subs, swords dances and salac boosts as well as escaping shadow tag shendera, stone edge for much needed coverage and taunt to stop phasers and such. It's also worth noting that should you baton pass out at 1%, regeneration brings you back up to 34%, and after taking SR damage and subbing you'll be down to 2.75%, which is back in 200 power reversal range. Sandstorm damage will ruin these numbers and fuck up the reversal set as a whole, but if drought ninetales/drizzle politoed are able to shift the metagame away from sand it becomes perfectly viable, or you could just run a sunny day/rain dance user. If you choose HJK over reversal you can use leftovers instead of salac to help with sub passing. Drain punch is also a valid option in this case. One could also choose to use a special or mixed version of this set with aura sphere/focus blast as your stab and calm mind/cheer up instead of swords dance, obviously using timid or naive instead of jolly. Regardless of the variant, all sets should lead with sub and hopefully force a switch which shouldn't be hard with base 120 attack. From there your opponent is forced to guess what type of set you're running; even if they guess correctly you have a trump card in the form of substitute and baton pass which can easily turn any unfavorable matchup around.
Kojondo @ salac/leftovers
Jolly
252 att/252 speed/6 def
Regeneration
Hi jump kick/Reversal
Substitute
Swords dance/Baton pass/Stone edge/Taunt
Swords dance/Baton pass/Stone edge/Taunt
Substitute abuse set with a ton of variants. The choice between HJK and reversal can greatly change how the entire set works; HJK has more immediate power and missing isn't much of a problem with renegeration healing you back up to 80% when switching out (assuming you were full to begin) and reversal having a massive potential base power but requiring a fair bit of setup. Substitute is the only definite from this set as it serves several purposes. It can be used to scout, sub down to salac/reversal range, and with regeneration healing more then substitute takes, you can pass what are essentially free subs should you opt to take baton pass. The last 2 slots are a matter of preference, swords dance for more power and more boosts to pass, baton pass for passing free subs, swords dances and salac boosts as well as escaping shadow tag shendera, stone edge for much needed coverage and taunt to stop phasers and such. It's also worth noting that should you baton pass out at 1%, regeneration brings you back up to 34%, and after taking SR damage and subbing you'll be down to 2.75%, which is back in 200 power reversal range. Sandstorm damage will ruin these numbers and fuck up the reversal set as a whole, but if drought ninetales/drizzle politoed are able to shift the metagame away from sand it becomes perfectly viable, or you could just run a sunny day/rain dance user. If you choose HJK over reversal you can use leftovers instead of salac to help with sub passing. Drain punch is also a valid option in this case. One could also choose to use a special or mixed version of this set with aura sphere/focus blast as your stab and calm mind/cheer up instead of swords dance, obviously using timid or naive instead of jolly. Regardless of the variant, all sets should lead with sub and hopefully force a switch which shouldn't be hard with base 120 attack. From there your opponent is forced to guess what type of set you're running; even if they guess correctly you have a trump card in the form of substitute and baton pass which can easily turn any unfavorable matchup around.