Moves
Blizzard is a very powerful STAB move that hits 100% of the time in hail and hits Pokemon such as Foongus, Drilbur, and Rufflet super effectively, as well as doing heavy neutral damage. Giga Drain is Snover's other STAB move that hits Water-types that resist Blizzard. Ice Shard is Snover's important priority move that can be used to clean weakened Pokemon, especially if they're faster than Snover such as Doduo or Vullaby after a Weak Armor boost. Hidden Power Ground is generally used as a coverage move to hit Fire- and Steel-types, which otherwise wall Snover, although it shouldn't be used in a one-on-one situation, as it can't OHKO them; it is best used on the switch. Hidden Power Fire has the same purpose as Hidden Power Ground, although it only hits Steel-types, especially Ferroseed, which is a common switch-in to Snover.
Set Details
Snover's defensive EV investments alongside its Eviolite grant it reasonable bulk, which allows it to tank more neutral or powerful resisted moves such as Hydro Pump and Psychic from Staryu and Abra, respectively. Snover's offensive EVs and a Quiet nature allow it to hit reasonably hard with its STAB moves and Ice Shard, giving it a balance in offense and defense, although the Quiet nature makes Snover a little sluggish. However, Snover's offensive capabilities and its bulk are much more important than its Speed, as it was already slow without the nature already. Snover's offensive EVs also allow it to OHKO Doduo and Eviolite Staryu with Ice Shard and Giga Drain, respectively, after hail and Stealth Rock damage. Snow Warning provides useful chip damage for Snover, as the opposing team gets weakened every turn, which leaves it vulnerable to Snover's strong STAB moves. It also breaks Focus Sashes.
Usage Tips
With its balance between defense and offense, Snover can be used as a pivot and switch into Pokemon that it resists and possibly take them out with super effective STAB moves. Pokemon that Snover can switch into and take out include Staryu and Chinchou, although Snover needs to watch out for the latter's Ice Beam if they run it. Snover should not be carelessly pivoted because if its switches into Knock Off, it loses an important portion of its bulk and is left more vulnerable, allowing it to be KOed by its faster checks. Snover should also be careful when pivoting, as the opponent can predict Snover switching in and hit it with a super effective coverage move; unexpected status moves are also risky to switch into, so be careful when pivoting Snover, and beware for status and coverage moves. As the Choice Scarf set is more commonly known and used, Snover can bluff being Choice-locked and surprise the opposing Pokemon that resists the previously used move with an other super effective move; an example of this is if Snover uses Blizzard when Staryu switches in and then surprises Staryu with Giga Drain. Snover should only use Hidden Power Ground if it predicts that one of its checks are going to switch in so it can deal super effective damage, although if Snover cannot outspeed that check, it needs to switch out because it will get KOed. You should never use Hidden Power Ground in a one-on-one situation against Snover's checks because mostly all of them can easily take a Hidden Power Ground and KO Snover.
Team Options
Snover appreciates powerful spinners and Defog users due to Stealth Rock taking its important health away; it affects this variant even more, since pivots need to switch in and out quite often, so Pokemon such as Staryu and Archen that can help remove Stealth Rock make for great partners. Archen especially is useful, as it can take out Flying- and Fire-types for Snover, while it takes out Water-types that threaten Archen. Pokemon that can deal with Fire-, Fighting-, and Flying-type Pokemon are great partners, as the aforementioned types except for Flying can wall most of Snover's moves and can outspeed and KO it, although Flying-types are in trouble if Snover lives their attack. Pokemon such as Onix, Staryu, and Archen can take out Fire-types, Abra and Doduo can take out the Fighting-types, and Elekid and Kabuto can take out faster Flying-types. Pokemon that appreciate Snover's automatic hail setting such as Alolan Sandshrew and Cubchoo are good teammates, as they both have access to Slush Rush and can sweep the opposing team and some of Snover's checks, including Flying-types. Snover can also help wear down and take out mutual checks. Steel-type checks are also appreciated, as Snover can't take out most of them with Hidden Power Ground alone, unless it hits a frailer Steel-type Pokemon on the switch that it outspeeds and can later 2HKO it. Pokemon such as Timburr, Ponyta, and Diglett are good teammates in this situation.