Jumpluff is by no means a bad Pokémon because it lacks the stats to attack. Instead, Jumpluff plays the role of supporting its teammates. Jumpluff can take advantage of Sleep Powder, base 110 Speed, and a plethora of support moves like Encore and Memento in UU, OU, and even in Ubers if you know how to take control of the field. Just don't expect Jumpluff to take too much torture, and you should be able to annoy all day.
This set is simple to use: Sleep Powder on the first turn, Substitute the second, and Leech Seed the third. Repeat steps two and three when needed. If you have entry hazard support, the indirect damage received from switching out from Leech Seed can add up very quickly. Encore simply adds to the madness, and thanks to the Substitute, you can switch around appropriately without worries.
Aerial Ace or Hidden Power Flying can be used over Encore should you want to be able to hurt Grass-types, while U-turn is another alternative for some scouting and escaping from troublesome Pokemon. Timid and 252 Speed EVs are used so Jumpluff can outrun Mismagius and Speed tie with Froslass. The rest are put into Defense and Special Defense to take weak, resisted attacks better. Don't put EVs in HP; this inhibits its SubSeeding ability as you want Leech Seed to restore a greater percentage of Jumpluff's health.Team Options & Additional Comments >>>
Due to Sleep Clause, you can only put one Pokemon to sleep with Sleep Powder. However, Jumpluff also has access to Stun Spore, meaning it can still annoy your opponent by not only putting one of their Pokemon to sleep, but also paralyzing a few.
Sleep Powder first, and then hopefully status with Stun Spore to hopefully hurt another Pokemon. Encore is an amazing move that can be used to buy free switch-ins. With good prediction, Jumpluff can switch into an Earthquake and Encore it, allowing it a free turn to abuse Sleep Powder or Stun Spore. U-turn is for getting the hell out of there when you're all done. It also helps ease prediction and shift the momentum of the game in your favor.Team Options & Additional Comments >>>
Jumpluff has a myriad of unique support options that can help the team, and this set puts all of them to good use. Its purpose is to provide a powerful attacker the chance to set up, hopefully opening the game for a sweep.
Jumpluff’s high Speed allows it plenty of chances to use Sleep Powder. With the opposing Pokémon asleep, Jumpluff can freely use Reflect to provide itself and its teammates more protection from physical attacks and then proceed to use Memento, a self-KO move that harshly lowers the opponent's Attack and Special Attack. At that point, a powerful set-up sweeper, such as Belly Drum Charizard, can enter the battle and use its stat-boosting move with little risk. This would also be a great opportunity for a Baton Passer to set up.
Encore is definitely the preferred third move to punish those that think Jumpluff is a setup fodder. Reflect does not have to be used in order for Jumpluff to be successful. It is somewhat of a filler move, but given the fact that UU is a tier crowded with physical attackers, it can prove to be very useful. If this set is used in OU or Ubers, Reflect can be dropped in favor of another move, such as Leech Seed or Toxic. Don't even bother with an attacking move like Grass Knot or Aerial Ace, as the damage output will be always be pitiful.Team Options & Additional Comments >>>
This combo is actually nice in UU and decent to use in OU. Use Sleep Powder first and then proceed to use Sunny Day to boost your Speed to 700. You can then easily U-turn away for your other teammates to tear through your opponent with Fire-type moves or their own Chlorophyll abilities.
The main reason for Encore is because once Sleep Clause is activated and you need Jumpluff to make the sunlight return, you have to rely on using Encore to cripple your opponent and give yourself a free turn to set up the sun during the switch. This allows you to U-turn safely from harm right after you set up the sun; however, your switch-in is at risk with the second strategy. Memento can go somewhere should you like the ability to help Swords Dance Tangrowth or Victreebel set up; with +2 Attack and doubled Speed, they will be a major pain to your opponent. This will work better in UU though as there are less Choice Scarf users to revenge them.Team Options & Additional Comments >>>
Worry Seed easily destroys Sleep Talkers like Articuno and also makes Clefable shuffle in fear. Aromatherapy can be thrown onto a set but isn't highly recommended on a Pokémon who can barely take many hits at all. It does have Swords Dance as well but lacks a physical movepool and an Attack stat as well. Bounce works well in conjunction with SubSeed as it helps protect your Substitute for a turn but also leaves you vulnerable once you crash down; however, you have that nice chance of paralysis on your side. Reflect tones down physical hits, but don't expect Jumpluff to be surviving long even with the screen up. Jumpluff can use Toxic to poison opponents; this would be particularly annoying on the SubSeed set, but this conflicts with Sleep Powder, and generally Stun Spore is better for the Double Powder set. Aerial Ace and Hidden Power Flying are other options, mainly for the SubSeed set. They give you a way to hit the many Grass-types in UU. However, Jumpluff's low Attack stats weakens the viability of these moves.
Checks and Counters
Sleep Powder makes Jumpluff incredibly hard to counter, as many UU Pokemon capable of absorbing sleep are extremely weak to the SubSeed set.
Clefable is one of the best counters to Jumpluff. Despite still being vulnerable to Encore and Sleep Powder, her Magic Guard ability makes Leech Seed useless. To make matters worse Clefable can easily carry a Toxic Orb and prevent any status put upon her. Grass-types are the best counters to the SubSeed set, although Sleep Powder is a pain for most. Sleep Talkers can easily step in on Sleep Powder and take advantage of the field by retaliating, but they won't like the SubSeed set. Primeape can do well as Vital Spirit blocks Sleep Powder and it has many ways of taking out Jumpluff, or it can just U-turn to a faster sweeper while breaking Jumpluff's Substitute.
Phazers can take advantage of the situation and simply force Jumpluff far away. And to make your life easier, next time Jumpluff steps in it receives 25% more damage if Stealth Rock is down. Just make sure that use Roar or Whirlwind only after you switch in. Since both moves have a negative priority, you run a risk of an Encore shoved right back at you. A lot of UU Pokémon can switch into Jumpluff but have a lot of issues from there. However, outside of Leech Seed and possibly U-turn you really have no fear of taking damage at all.