So yeah, me and Ice-eyes were discussing this on IRC, and I remember it being INCREDIBLY frustrating to take down on the occasions I did face it.
[SET]
name: Stallbreaker
move 1: Taunt
move 2: Toxic
move 3: Slack Off
move 4: Return
item: Eviolite
nature: Impish
evs: 252 HP / 252 Def / 4 SpD
[SET COMMENTS]
<p>While Vigoroth can easily set up and attack the opponent, it also has the defenses and the Speed to work as an excellent stallbreaker, as it has access to Taunt and Toxic. This allows Vigoroth to effectively stall out almost any slower opponent by preventing them from doing anything but attack Vigoroth without any boosts whatsoever. Taunt allows Vigoroth to prevent the opponent from recovering HP or from using any support move. Toxic, on the other hand, drains the opponent's HP every turn as they attack Vigoroth, since they do not have the option to recover HP due to Taunt. Slack Off is great for Vigoroth, instantly recovering half of its HP and allowing it to take many more attacks from the opponent. In the final moveslot, Return prevents Vigoroth itself from being Taunt bait, and hits fairly hard, even when uninvested, coming off of a base 80 Attack stat.</p>
[ADDITIONAL COMMENTS]
<p>Max HP and Defense EVs take advantage of Vigoroth's higher base stats, and along with the boost to its defenses thanks to Eviolite, Vigoroth is very hard to take down with physical attacks. However, you have the option of putting some of your EVs in Speed to always outpace some of the more common Pokemon on stall teams. Likewise, shifting all of its Defense EVs into Special Defense lets you shut down many special attackers, as Vigoroth can easily survive a Leaf Storm from Choice Specs Exeggutor and use Slack Off to take the second one.</p>
<p>Using Bulk Up over Toxic is really the only advisable change to this set, though even with that change, it radically changes how this set functions. However, it is definitely usable. Teammates who can take care of faster Fighting-types are great partners. In particular, Misdreavus not only takes on every Fighting-type in the tier, butcan also use Heal Bell to support Vigoroth and get rid of any unwanted status effects it may have gotten while on the field.</p>
[SET]
name: Stallbreaker
move 1: Taunt
move 2: Toxic
move 3: Slack Off
move 4: Return
item: Eviolite
nature: Impish
evs: 252 HP / 252 Def / 4 SpD
[SET COMMENTS]
<p>While Vigoroth can easily set up and attack the opponent, it also has the defenses and the Speed to work as an excellent stallbreaker, as it has access to Taunt and Toxic. This allows Vigoroth to effectively stall out almost any slower opponent by preventing them from doing anything but attack Vigoroth without any boosts whatsoever. Taunt allows Vigoroth to prevent the opponent from recovering HP or from using any support move. Toxic, on the other hand, drains the opponent's HP every turn as they attack Vigoroth, since they do not have the option to recover HP due to Taunt. Slack Off is great for Vigoroth, instantly recovering half of its HP and allowing it to take many more attacks from the opponent. In the final moveslot, Return prevents Vigoroth itself from being Taunt bait, and hits fairly hard, even when uninvested, coming off of a base 80 Attack stat.</p>
[ADDITIONAL COMMENTS]
<p>Max HP and Defense EVs take advantage of Vigoroth's higher base stats, and along with the boost to its defenses thanks to Eviolite, Vigoroth is very hard to take down with physical attacks. However, you have the option of putting some of your EVs in Speed to always outpace some of the more common Pokemon on stall teams. Likewise, shifting all of its Defense EVs into Special Defense lets you shut down many special attackers, as Vigoroth can easily survive a Leaf Storm from Choice Specs Exeggutor and use Slack Off to take the second one.</p>
<p>Using Bulk Up over Toxic is really the only advisable change to this set, though even with that change, it radically changes how this set functions. However, it is definitely usable. Teammates who can take care of faster Fighting-types are great partners. In particular, Misdreavus not only takes on every Fighting-type in the tier, butcan also use Heal Bell to support Vigoroth and get rid of any unwanted status effects it may have gotten while on the field.</p>