MillionDaggers showed this to me and I tested it out for a bit. Worked much better then Kecleon's other sets because it can completely screw up opposing Pokemon. Apparently he made this set for OU play but it still worked well in UU. I forgot all about this set but luckily I happened to catch it on a warstory here on Smogon.
http://www.smogon.com/dp/pokemon/kecleon
[SET]
Name: Priority
Move 1: Substitute / Snatch
Move 2: Magic Coat / Thunder Wave
Move 3: Sucker Punch
Move 4: Focus Punch
Item: Leftovers
Nature: Careful / Sassy
EVs: 240 HP / 16 Atk / 252 SpD
[SET COMMENTS]
<p>Instead of straight out attacking like the previous sets, this set relies on prediction and the use of priority moves to make up for Kecleon's below average Speed.</p>
<p>Kecleon often falls victim to status moves as his low Speed prevents him from using Substitute first. However with Magic Coat, you can bounce back any status attack and give Kecleon the advantage. This also provides Kecleon a chance to set up Substitute without problem. Thunder Wave can be included to ensure you can create a Substitute before taking damage. When under the Substitute, the prediction game starts. Sucker Punch can take out any damaged, fast, frail sweepers who rely solely on Speed and try to break the Substitute. Focus Punch can also be used behind the Substitute, especially if Kecleon's Color Change causes it to become a Fighting-type. The type combo of Sucker Punch (Dark) and Focus Punch (Fighting) also provides a neutral hit against every Pokemon (barring Heracross and Toxicroak) in the game.</p>
<p>Snatch is a fantastic option over Substitute as it allows you not only to steal your opponent's Substitute but also steal stat boosts as well. A Kecleon with +2 Attack after Snatching a Swords Dance is much more dangerous than a normal one.</p>
<p>The EVs focus on Kecleon's fantastic Special Defense, allowing him to take any special attacks coming his way. 240 HP EVs allow him to switch into Stealth Rock 8 times without dying as well as creating 5 Substitutes when factoring in Leftovers.</p>
<p>If you feel Kecleon needs more attacking power, an alternate EV spread of 240 HP / 236 Atk / 32 SpD with an Adamant Nature can be used. This provides Kecleon a way of killing many more threats with Focus Punch and Sucker Punch.</p>
http://www.smogon.com/dp/pokemon/kecleon
[SET]
Name: Priority
Move 1: Substitute / Snatch
Move 2: Magic Coat / Thunder Wave
Move 3: Sucker Punch
Move 4: Focus Punch
Item: Leftovers
Nature: Careful / Sassy
EVs: 240 HP / 16 Atk / 252 SpD
[SET COMMENTS]
<p>Instead of straight out attacking like the previous sets, this set relies on prediction and the use of priority moves to make up for Kecleon's below average Speed.</p>
<p>Kecleon often falls victim to status moves as his low Speed prevents him from using Substitute first. However with Magic Coat, you can bounce back any status attack and give Kecleon the advantage. This also provides Kecleon a chance to set up Substitute without problem. Thunder Wave can be included to ensure you can create a Substitute before taking damage. When under the Substitute, the prediction game starts. Sucker Punch can take out any damaged, fast, frail sweepers who rely solely on Speed and try to break the Substitute. Focus Punch can also be used behind the Substitute, especially if Kecleon's Color Change causes it to become a Fighting-type. The type combo of Sucker Punch (Dark) and Focus Punch (Fighting) also provides a neutral hit against every Pokemon (barring Heracross and Toxicroak) in the game.</p>
<p>Snatch is a fantastic option over Substitute as it allows you not only to steal your opponent's Substitute but also steal stat boosts as well. A Kecleon with +2 Attack after Snatching a Swords Dance is much more dangerous than a normal one.</p>
<p>The EVs focus on Kecleon's fantastic Special Defense, allowing him to take any special attacks coming his way. 240 HP EVs allow him to switch into Stealth Rock 8 times without dying as well as creating 5 Substitutes when factoring in Leftovers.</p>
<p>If you feel Kecleon needs more attacking power, an alternate EV spread of 240 HP / 236 Atk / 32 SpD with an Adamant Nature can be used. This provides Kecleon a way of killing many more threats with Focus Punch and Sucker Punch.</p>