I spent the morning trolling PO with this Sableye set:
Sableye @Leftovers
Impish, 252 HP / 252 Def / 4 SpDef
Ability: Mischievous Heart
-Substitute
-Protect
-Recover
-Will-o-Wisp / Night Shade
With Toxic Spikes support, this little beast has managed to stall entire teams to death. After making sure the opponent doesn't have Heatran or any Magic Guard users, you can stall two opponents completely to death just by burning anything immune to Toxic Spikes, then alternating Substitute/Protect. Sableye is also surprisingly bulky. I'm not going to run calcs right now, but as I learned from matches this morning, Kingdra's +1 Waterfall does ~60%, Heracross' Night Slash/Rock Slide does ~40%, Goruggo's Stone Edge does ~35%, etc. You can easily take most unboosted hits safely, alternating Recover and Protect to slowly gain Lefties recovery.
It's definitely a gimmick, and your whole team has to be built around it, but it CAN work. This is the first time in my life I've ever seen Sableye claim 6 kills to its name in a single battle.
I also ran a similar set with Voltolos, just to see how they compare.
Voltolos @Leftovers
Timid, 252 SpAtk / 252 Spd / 4 HP
Ability: Mischievous Heart
-Substitute
-Protect
-Thunderbolt
-Grass Knot
Having actual attacks was helpful, for obvious reasons. You score kills much faster, and Voltolos' natural sweeping/revenging capability still comes through in a pinch. However, I didn't have nearly as much success with this as with Sableye. The key difference was that I found a surprising number of chances to Recover with Sableye, allowing me to continue the Toxic-stalling nonsense a lot longer. Voltolos could reliably score one kill this way per battle, but Sableye often ranged from 3-5, depending on the other team.
Sableye @Leftovers
Impish, 252 HP / 252 Def / 4 SpDef
Ability: Mischievous Heart
-Substitute
-Protect
-Recover
-Will-o-Wisp / Night Shade
With Toxic Spikes support, this little beast has managed to stall entire teams to death. After making sure the opponent doesn't have Heatran or any Magic Guard users, you can stall two opponents completely to death just by burning anything immune to Toxic Spikes, then alternating Substitute/Protect. Sableye is also surprisingly bulky. I'm not going to run calcs right now, but as I learned from matches this morning, Kingdra's +1 Waterfall does ~60%, Heracross' Night Slash/Rock Slide does ~40%, Goruggo's Stone Edge does ~35%, etc. You can easily take most unboosted hits safely, alternating Recover and Protect to slowly gain Lefties recovery.
It's definitely a gimmick, and your whole team has to be built around it, but it CAN work. This is the first time in my life I've ever seen Sableye claim 6 kills to its name in a single battle.
I also ran a similar set with Voltolos, just to see how they compare.
Voltolos @Leftovers
Timid, 252 SpAtk / 252 Spd / 4 HP
Ability: Mischievous Heart
-Substitute
-Protect
-Thunderbolt
-Grass Knot
Having actual attacks was helpful, for obvious reasons. You score kills much faster, and Voltolos' natural sweeping/revenging capability still comes through in a pinch. However, I didn't have nearly as much success with this as with Sableye. The key difference was that I found a surprising number of chances to Recover with Sableye, allowing me to continue the Toxic-stalling nonsense a lot longer. Voltolos could reliably score one kill this way per battle, but Sableye often ranged from 3-5, depending on the other team.