but doesn't slaking have a fairly high defense/HP stat? I haven't seen a slaking go down yet in 1 move from a non super-effective hit, so the Focus Sash would be pointless. Perhaps change Slack off with Skill Swap, it is helpfull when up against a physical sweeper, as the opponent will usually change when faced with traunt, and if they don't, all the better for you anyway!
[email protected]/Liechi Berry/Salac Berry
Adamant
252 Atk, 152 Speed, 106 HP - (Unsure on the Speed/HP set up, depends on the use of substitute.)
Skill Swap
Earthquake
Flail/Return -
one or the other, not both.
Yawn/Substitute -
Substitute can help with the usage of skill swap, although can also be used with yawn.
~M51