Bumping this because kd24 is a lazy bum and won't fix the stuff GP people checked. He takes 100% of the credit for the write-up, I'm just making it go through the last GP check. His thread can be locked here: http://www.smogon.com/forums/showthread.php?t=81785.
[SET]
name: Choice Scarf
move 1: Blizzard
move 2: Hidden Power Ground
move 3: Ice Shard
move 4: Energy Ball / Wood Hammer
item: Choice Scarf
nature: Hasty
evs: 8 HP / 252 SpA / 4 SpD / 244 Spe
[SET COMMENTS]
<p>When Snover enters the playing field, the one thing going through the opponent's mind will be "dead weight". It is used almost solely in UU to set up hail, then either sit around for the majority of the match or just be used as death fodder. However, when equipped with a Choice Scarf, Snover stops being dead weight for hail teams and instead becomes an effective counter to almost every Rain Dance team, as well as an effective revenge killer to common Pokemon such as Venusaur.</p>
<p>Blizzard is the primary attack, having 180 Base Power after STAB combined with 100% accuracy and no drawbacks in hail. Although Blizzard is the most powerful attack on the set, it is not the only useful one; Hidden Power Ground allows Snover to significantly damage Aggron and provides excellent coverage with Blizzard. Ice Shard is a useful tool for killing faster Pokemon with a bit of health left, such as Swellow or Dugtrio. In the final moveslot, use your Grass-type move of choice; regardless of what move you choose, Snover will still be able to demolish Rain Dance, giving it a unique niche in the UU metagame.</p>
[Additional Comments]
<p>244 Speed EVs with a Hasty Nature allows Snover to outspeed max Speed base 80 Pokemon such as Venusaur or Kabutops, as well as Life Orb Milotic and max Speed, neutral nature base 95 Speed Pokemon such as Arcanine. Venusaur, who will usually stay in and try to KO Snover with Life Orb Sludge Bomb, can be taken out by Blizzard before it even gets a chance to land a hit on Snover. The key to stopping rain is the element of surprise that this set gives. All Snover has to do is switch into Kabutops, either during Swords Dance or after Kabutops has killed one of your Pokemon. With the rain stopped due to Snow Warning, Snover will now outspeed Kabutops. Kabutops, under the assumption that it will be faster, will try to OHKO Snover with Stone Edge, but it will promptly be OHKOed by Snover's Grass-type attack of choice. This same method can take out Omastar (although Omastar will likely switch out unless it can KO Snover) and also stop rain, allowing Snover to slowly wear down all of the opponent's rain sweepers.</p>
<p>Choosing between Energy Ball and Wood Hammer can be difficult. Both can OHKO Kabutops and Omastar; however, the former will have more power versus Rhyperior and Regirock, while the latter will deal more damage to Lanturn and Mismagius. This can be especially useful when these Pokemon switch in, expecting a light Grass Knot and instead getting smashed by a STAB Wood Hammer.</p>
<p>Choice Scarf Snover adds yet another sweeper onto "Blizzspam" teams, and also adds a safety net for hail stall teams that often find themselves weak to Rain Dance. Obviously, other Pokemon that can abuse hail are excellent partners. Glaceon, Walrein, and Jynx can fire off STAB Blizzards from their high Special Attack stats. Dugtrio is another useful Pokemon on these hail teams, trapping and KOing Registeel and Chansey, two of Snover's biggest threats. To keep Snover healthy, a Rapid Spin user is also advised, as Snover has enough trouble switching into attacks with its low defenses anyway. Snover should be used on teams that are in need of hail, such as offensive Blizzard or hail stall teams. Snover's Snow Warning will cut Synthesis and Morning Sun's healing power, as well as take off 6% HP from your Pokemon each turn, unless they are Ice-types.</p>
<p>Registeel is the best counter to this set, shrugging off anything Snover throws at it and firing off Thunder Waves, Iron Heads, or setting up Rain Dance for free. Arcanine can also shrug off all of Snover's attacks and OHKO with Flare Blitz, and can outspeed Snover without the use of boosting items (assuming it has a positive nature). Moltres also outspeeds with a positive nature and can switch in on every attack except Blizzard, threatening Snover with STAB Fire Blast. Snover's utility dramatically goes down after the set is revealed, as it only takes smart switching to ultimately down it.</p>

[SET]
name: Choice Scarf
move 1: Blizzard
move 2: Hidden Power Ground
move 3: Ice Shard
move 4: Energy Ball / Wood Hammer
item: Choice Scarf
nature: Hasty
evs: 8 HP / 252 SpA / 4 SpD / 244 Spe
[SET COMMENTS]
<p>When Snover enters the playing field, the one thing going through the opponent's mind will be "dead weight". It is used almost solely in UU to set up hail, then either sit around for the majority of the match or just be used as death fodder. However, when equipped with a Choice Scarf, Snover stops being dead weight for hail teams and instead becomes an effective counter to almost every Rain Dance team, as well as an effective revenge killer to common Pokemon such as Venusaur.</p>
<p>Blizzard is the primary attack, having 180 Base Power after STAB combined with 100% accuracy and no drawbacks in hail. Although Blizzard is the most powerful attack on the set, it is not the only useful one; Hidden Power Ground allows Snover to significantly damage Aggron and provides excellent coverage with Blizzard. Ice Shard is a useful tool for killing faster Pokemon with a bit of health left, such as Swellow or Dugtrio. In the final moveslot, use your Grass-type move of choice; regardless of what move you choose, Snover will still be able to demolish Rain Dance, giving it a unique niche in the UU metagame.</p>
[Additional Comments]
<p>244 Speed EVs with a Hasty Nature allows Snover to outspeed max Speed base 80 Pokemon such as Venusaur or Kabutops, as well as Life Orb Milotic and max Speed, neutral nature base 95 Speed Pokemon such as Arcanine. Venusaur, who will usually stay in and try to KO Snover with Life Orb Sludge Bomb, can be taken out by Blizzard before it even gets a chance to land a hit on Snover. The key to stopping rain is the element of surprise that this set gives. All Snover has to do is switch into Kabutops, either during Swords Dance or after Kabutops has killed one of your Pokemon. With the rain stopped due to Snow Warning, Snover will now outspeed Kabutops. Kabutops, under the assumption that it will be faster, will try to OHKO Snover with Stone Edge, but it will promptly be OHKOed by Snover's Grass-type attack of choice. This same method can take out Omastar (although Omastar will likely switch out unless it can KO Snover) and also stop rain, allowing Snover to slowly wear down all of the opponent's rain sweepers.</p>
<p>Choosing between Energy Ball and Wood Hammer can be difficult. Both can OHKO Kabutops and Omastar; however, the former will have more power versus Rhyperior and Regirock, while the latter will deal more damage to Lanturn and Mismagius. This can be especially useful when these Pokemon switch in, expecting a light Grass Knot and instead getting smashed by a STAB Wood Hammer.</p>
<p>Choice Scarf Snover adds yet another sweeper onto "Blizzspam" teams, and also adds a safety net for hail stall teams that often find themselves weak to Rain Dance. Obviously, other Pokemon that can abuse hail are excellent partners. Glaceon, Walrein, and Jynx can fire off STAB Blizzards from their high Special Attack stats. Dugtrio is another useful Pokemon on these hail teams, trapping and KOing Registeel and Chansey, two of Snover's biggest threats. To keep Snover healthy, a Rapid Spin user is also advised, as Snover has enough trouble switching into attacks with its low defenses anyway. Snover should be used on teams that are in need of hail, such as offensive Blizzard or hail stall teams. Snover's Snow Warning will cut Synthesis and Morning Sun's healing power, as well as take off 6% HP from your Pokemon each turn, unless they are Ice-types.</p>
<p>Registeel is the best counter to this set, shrugging off anything Snover throws at it and firing off Thunder Waves, Iron Heads, or setting up Rain Dance for free. Arcanine can also shrug off all of Snover's attacks and OHKO with Flare Blitz, and can outspeed Snover without the use of boosting items (assuming it has a positive nature). Moltres also outspeeds with a positive nature and can switch in on every attack except Blizzard, threatening Snover with STAB Fire Blast. Snover's utility dramatically goes down after the set is revealed, as it only takes smart switching to ultimately down it.</p>