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Jellicent can be a great supporting pokemon in Ubers. Its nice typing and Water Absorb gives it many resistances and immunities,and along with its bulkiness on both sides thanks to its high HP, makes it a good counter to many pokemon. However, being a grouded pokemon, Jellicent is affected by all hazards, although the damage taken can be healed off with recover. It has a decent Sp. Atk stat, and with moves like Toxic, Boiling Water, and Will-o-wisp, it can be great for support, spreading status throughout the entire opposing team. Its ghost typing can also allow it to be used as a spin blocker.
name: Status Jellicent
move 1: Boiling Water / Surf
move 2: Recover / Pain Split
move 3: Energy Ball / Ice Beam
move 4: Toxic / Will-o-Wisp
ability: Water Absorb
evs: 252 HP / 4 Def / 252 SpD
Counters any choiced Kyogre and Manaphy.
Can switch in on many types and can last incredibly long thanks to Recover.
Boiling Water and Will-o-wisp stops physical attacks from hitting Jellicent's weaker side.
Boiling water should not be used with Will-o-wisp. Toxic is a better option against non-physical attackers. Will-O-Wisp is better used with surf, as it gives it a solid Status move. Pain Split can be used to wear down opponents when you're low on health. Ice Beam hits Grass and Dragon types, energy ball hits Water and Ground types (namely Kyogre and Groudon) . Toxic can be used to wear down other walls and stall out Special attackers.
Calm makes Jellicent a strong special wall.
Teammates and Counters:
Can be paired with Ferrothorn, as the two cover each others weaknesses very well. Ferrothorn can set up hazards while Jellicent spinblocks. You can switch Jellicent into Ice and Fire moves, which can be super effective against the dragon and steel types (Scizor) on your team.
Walled by other special walls.
No investment in Sp. Atk makes it hard to take down pokemon with decent special bulk and threaten it with super effective moves.
Great synergy with pokemon that resist types super effective to Jellicent, such as Ferrothorn.
Hydro Pump can be used instead of surf, especially under rain.
Shadow ball can be used in the 3rd slot for STAB.
You can invest more EVs into defense to help its physical side.
Lum Berry can be used, as Jellicent does not like being statused.
Bulky Waters and grass types. Bulky waters usually end up in a PP war, and Jellicent isn't powerful enough to KO grass types with ice beam.
Dark types such as Tyrannitar can hit with a super effective move.
Unscarfed Kyogre can hit with Thunder.