Need help dealing with a common problem

[Crazyme931]

I have assembled a team and although it can often work well, I always seem to have a problem with rotom-w in online play. I tried Energy Ball but it does not seem like enough. Any good ideas to eliminate similar foes easily?

Tyranitar@Chople berry
Adamant
252/HP 252/Sp.Def
Stealth Rock
Earthquake
Pursuit
Stone Edge
Role: Lead

Dugtrio@Focus Sash
Jolly
Arena Trap
252/Atk 252/Spd
Sucker Punch
Stone Edge
Earthquake
Reversal
Role: Revenge Killer

Landorus@Choice Scarf
Naïve
252/Atk 252/Spd
U-Turn
Earthquake
Stone Edge
Hidden Power Ice
Role: Physical Sweeper

Latios@Life Orb
Timid
252/Sp.Atk 252/Spd
Hidden Power Fire
Energy Ball
Dragon Pulse
Surf
Role: Special Sweeper

Skarmory@Shed Shell
Sturdy
Relaxed
252/HP 178/Def 80/Sp.Def
Spikes
Drill Peck
Whirlwind
Roost
Role: Spikes support/ Phazer

Jellicent@Leftovers
Water-Absorb
Sassy
252/HP 178.Sp.Def 80/Def
Ice Beam
Shadow Ball
Energy Ball
Recover
Role: Special Wall

 

[Ho-Oh]

Since it's a sand team, you could easily put Gastrodon on your team. Rotom-W can't really do anything to it, unless it tricks it, but otherwise both its STABs are useless, since it absorbs h-pump and can't be hit by v-switch, etc. So you could replace Jellicent with this as the special wall:

Gastrodon@Leftovers
Sassy / Calm
252 HP / 4 SpA / 252 SpD
Storm Drain
- Earthquake / Earth Power
- Ice Beam / Scald
- Toxic
- Recover

 

[potent445]

Your best bet is probably to use Gastro like forever said. If you dont like gastro some other good pokemon to use are Ferrothorn and Celebi.
Ferothorn
Realaxed@Leftovers@Steel Thorns
Spikes
Leech Seed/Stealth Rocks
Protect/Gyro Ball/Thunder Wave
Powerwhip
252HP/88Def/168SpDef

Ferrothorn can take any hit and set up enrty hazzards ot hit with a powerful powerwhip. Although you should be wary that some Rotom carry HP fire and Ferro hates being tricked or burned.

Celebi
Modest@Leftovers/Life Orb@Natural Cure
Nasty Plot
Giga Drain
Hidden Power (Fire)
Earthpower/Psychic/Recover
220HP/252SpAtk/36Speed

Celebi can take any hit from rotom well except HP fire which is only a 2 hit KO with specs. The reason I suggested nasty plot set is that it wont mind recieving a choice scarf or specs from rotom. Celebi also has the added bonus of having natural cure and is a special attacker which means it wont mind being burned.