I've used this set in almost all my sand teams and it has proven to be a valuable team mate capable of removing threats that would otherwise threathen other main sweepers, namely Terrakion and Excadrill. After seeing it's abcense at the strategy pokedex, I've decided to submit it officially.
[SET]
name: Calm Mind/Bait
move 1: Calm Mind
move 2: Earth Power
move 3: Focus Blast
move 4: Hidden Power Ice / Hidden Power Grass
item: Life Orb
ability: Sand Force
nature: Timid
evs: 4 HP / 252 SpA / 252 Spe
ivs: Costomize in order to get the desired Hidden Power Typing
[SET COMMENTS]
<p>I should say up front that this set is NOT made for a game winning sweep, instead, this set's goal is to lure common counters and switch ins to other sweepers and eliminate them, so can, later on, perform a much neater and safe sweep. He is a great partner for the likes of Excadrill, Terrakion and Metagross.
It's relatively simple to use: switch in on something you can force out, Calm Mind on the switch and you should be able to take a big chunk from whatever comes in. Earth Power is a slightly weaker EQ from the special side, and since it is boosted by Sand Force it will deal more dmage than most people are expecting it to. Focus Blast takes care of other important targets such as Skarmory, Balloon Heatran and Bronzong. Even Blissey takes a nice chunk! The last slot is up to the user. Hidden Power [Ice] deals with dragons (like the omnipresent Dragonite), but most importantly Gliscor, who otherwise counters the other mainstay sand sweepers. Hidden Power [Grass] on the other hand, provides a way to deal with other problematic 'mons, namely Swampert, Gastrodon, and most importantly, Quagsire. It also hurts Rotom-W more than EQ. Downside is, it will leave you very vulnerable to flying pokemon. Use it only when your team can take care of the before-mentioned Gliscor and Dragonite.
But you may be asking: What does this set do that a regular SD set can't? Well, let's take a look at some calcs shall we (all calcs will be made using a +1 SpA boost and under the influence ofsand)? Against a physical Hippowdon, Landorus deals 105,95% - 124,52%, and against a specially defensive one it deals 79,29% - 93,1%, OHKO after 2 layers of spikes or prior damage. What about Skarmory? Using Focus Blast, Physically defensive is hurt by 93,71% - 110,48%, OHKO after rocks. Specially defensive is hurt by 63,17% - 74,25%. You can KO with HP Ice right after so you don't risk a second Focus Blast. Physical Bronzong takes 60,95% - 71,89%, 2HKO'd. Specially Based takes around 44,97% - 52,96%, so you can at least see which set he is using, and in case it's special based switch so another pokemon can deal with it. Standart Blissey takes 50,42% - 59,1%, so if your opponent notices you're special, and then switches to Blissey, if you predict that you can 2HKO it with Focus Blast.
When taking these calcs in consideration, one must not forget the secondary effects of Earth Power and Focus Blast: a SpD drop. These can turn the tide in your favour. Blissey got hit by a SpD drop during the first Focus Blast? Don't risk another miss and use Earth Power for the KO. Special bronzong is also safely 2hKO'd with a SpD drop. Another side effect of Calm Mind is the added special bulk, allowing you to take special hits a little better. It might seem neglegible, but it does make a difference in a few scenarios.
This set is not without drawbacks though. You are vulnerable to faster sweepers, namely starmie, gengar, Lati@s and Mixnape. Remember that as this set is not made to sweep complete teams, just to remove certain key opponents. Keep that in mind and you should prosper with this set. </p>

[SET]
name: Calm Mind/Bait
move 1: Calm Mind
move 2: Earth Power
move 3: Focus Blast
move 4: Hidden Power Ice / Hidden Power Grass
item: Life Orb
ability: Sand Force
nature: Timid
evs: 4 HP / 252 SpA / 252 Spe
ivs: Costomize in order to get the desired Hidden Power Typing
[SET COMMENTS]
<p>I should say up front that this set is NOT made for a game winning sweep, instead, this set's goal is to lure common counters and switch ins to other sweepers and eliminate them, so can, later on, perform a much neater and safe sweep. He is a great partner for the likes of Excadrill, Terrakion and Metagross.
It's relatively simple to use: switch in on something you can force out, Calm Mind on the switch and you should be able to take a big chunk from whatever comes in. Earth Power is a slightly weaker EQ from the special side, and since it is boosted by Sand Force it will deal more dmage than most people are expecting it to. Focus Blast takes care of other important targets such as Skarmory, Balloon Heatran and Bronzong. Even Blissey takes a nice chunk! The last slot is up to the user. Hidden Power [Ice] deals with dragons (like the omnipresent Dragonite), but most importantly Gliscor, who otherwise counters the other mainstay sand sweepers. Hidden Power [Grass] on the other hand, provides a way to deal with other problematic 'mons, namely Swampert, Gastrodon, and most importantly, Quagsire. It also hurts Rotom-W more than EQ. Downside is, it will leave you very vulnerable to flying pokemon. Use it only when your team can take care of the before-mentioned Gliscor and Dragonite.
But you may be asking: What does this set do that a regular SD set can't? Well, let's take a look at some calcs shall we (all calcs will be made using a +1 SpA boost and under the influence ofsand)? Against a physical Hippowdon, Landorus deals 105,95% - 124,52%, and against a specially defensive one it deals 79,29% - 93,1%, OHKO after 2 layers of spikes or prior damage. What about Skarmory? Using Focus Blast, Physically defensive is hurt by 93,71% - 110,48%, OHKO after rocks. Specially defensive is hurt by 63,17% - 74,25%. You can KO with HP Ice right after so you don't risk a second Focus Blast. Physical Bronzong takes 60,95% - 71,89%, 2HKO'd. Specially Based takes around 44,97% - 52,96%, so you can at least see which set he is using, and in case it's special based switch so another pokemon can deal with it. Standart Blissey takes 50,42% - 59,1%, so if your opponent notices you're special, and then switches to Blissey, if you predict that you can 2HKO it with Focus Blast.
When taking these calcs in consideration, one must not forget the secondary effects of Earth Power and Focus Blast: a SpD drop. These can turn the tide in your favour. Blissey got hit by a SpD drop during the first Focus Blast? Don't risk another miss and use Earth Power for the KO. Special bronzong is also safely 2hKO'd with a SpD drop. Another side effect of Calm Mind is the added special bulk, allowing you to take special hits a little better. It might seem neglegible, but it does make a difference in a few scenarios.
This set is not without drawbacks though. You are vulnerable to faster sweepers, namely starmie, gengar, Lati@s and Mixnape. Remember that as this set is not made to sweep complete teams, just to remove certain key opponents. Keep that in mind and you should prosper with this set. </p>