Team needs Mega?

[Dragonkid0207]

I'm not sure if i should take a Poke out for a compatible Mega or just leave it like this. It has been working out really well so far without one. Even if you think this doesn't need a Mega can you please tell me what I should take out and what I should replace it with. Just tell me what you think of the team though.
Thanks!:)
Dragonite @ Weakness Policy
Ability: Multiscale
EVs: 4 HP / 252 Atk / 252 Spd
Jolly Nature
- Fire Punch
- Dragon Claw
- Dragon Dance
- Earthquake

Volcarona @ Life Orb
Ability: Flame Body
EVs: 252 Spd / 252 SAtk / 4 HP
Modest Nature
- Quiver Dance
- Fiery Dance
- Bug Buzz
- Psychic

Gourgeist-Super @ Sitrus Berry
Ability: Frisk
EVs: 252 HP / 4 Atk / 252 Def
Impish Nature
- Will-O-Wisp
- Seed Bomb
- Leech Seed
- Pain Split

Cloyster @ King's Rock
Ability: Skill Link
EVs: 252 Spd / 252 Atk / 4 HP
Adamant Nature
- Ice Shard
- Icicle Spear
- Rock Blast
- Shell Smash

Excadrill @ Air Balloon
Ability: Sand Rush
EVs: 252 Spd / 252 Atk / 4 HP
Adamant Nature
- Rapid Spin
- Earthquake
- Swords Dance
- Rock Slide

Hippowdon @ Leftovers
Ability: Sand Stream
EVs: 252 Atk / 252 HP / 4 SDef
Adamant Nature
- Ice Fang
- Slack Off
- Whirlwind
- Earthquake
Stealth rocks will replace one of these moves when the PokeBank comes out.

 

[PlatinumDude]

Cloyster needs to use a Jolly nature because it fails to outspeed certain Choice Scarf threats as Adamant, even at +2 Speed.

If you need a Mega Pokemon, Mega Tyranitar works well because of its offensive presence while also providing sand for the team:
-Dragon Dance
-Stone Edge
-Crunch
-Earthquake/Ice Fang
Nature: Jolly
EVs: 4 HP/252 Atk/252 Spe
Item: Tyranitarite
Ability: Sand Stream

 

[Dragonkid0207]

Cloyster needs to use a Jolly nature because it fails to outspeed certain Choice Scarf threats as Adamant, even at +2 Speed.

If you need a Mega Pokemon, Mega Tyranitar works well because of its offensive presence while also providing sand for the team:
-Dragon Dance
-Stone Edge
-Crunch
-Earthquake/Ice Fang
Nature: Jolly
EVs: 4 HP/252 Atk/252 Spe
Item: Tyranitarite
Ability: Sand Stream

What do you suggest I take out for Tyranitar?

 

[halcyonic]

you can take out hippowdon, cause double sand isnt rly needed.

 

[Hiatus]

If you like, you could give Lucario a try with the following set:

Lucario @ Lucarionite
Ability: Adaptability
EVs: 252 Atk / 4 HP / 252 Spd
Jolly Nature
- Close Combat
- Bullet Punch
- Crunch
- Swords Dance

I've used it in Showdown once, and it seems to work amazingly well. (: After a single use of Swords Dance, it could wipe out your opponent's entire team pretty easily. Either that, or you should probably go with Mega Aggron.

Aggron @ Aggronite
Ability: Filter
EVs: 252 SpDef / 252 Atk / 4 HP
Nature: Adamant
- Iron Head
- Curse
- Rest
- Sleep Talk

Not sure what Pokémon you should remove, though... perhaps Excadrill?

 

[PlatinumDude]

If you like, you could give Lucario a try with the following set:

Lucario @ Lucarionite
Ability: Adaptability
EVs: 252 Atk / 4 HP / 252 Spd
Jolly Nature
- Close Combat
- Bullet Punch
- Crunch
- Swords Dance

I've used it in Showdown once, and it seems to work amazingly well. (: After a single use of Swords Dance, it could wipe out your opponent's entire team pretty easily. Either that, or you should probably go with Mega Aggron.

Aggron @ Aggronite
Ability: Filter
EVs: 252 SpDef / 252 Atk / 4 HP
Nature: Adamant
- Iron Head
- Curse
- Rest
- Sleep Talk

Not sure what Pokémon you should remove, though... perhaps Excadrill?

Excadrill is necessary for the team because it gives Volcarona and Dragonite Rapid Spin support, since they're weak to Stealth Rock.

I don't think Dragonite is a good fit for a Sand team because 1 round of sandstorm renders Multiscale useless.

Extreme Speed is also viable on Mega Lucario because of its +2 priority, and it also hits as hard as Adaptability-boosted Bullet Punch. Though Earthquake is redundant with Close Combat, it lets Lucario hit Aegislash without triggering the Attack drop of King's Shield.

Also, I don't agree with Curse as an option for Mega Aggron. Mega Aggron meant to sponge hits while striking back hard. Its Attack and Defense are also reasonably high enough to not rely on Curse:
-Stealth Rock
-Heavy Slam/Iron Head
-Thunder Wave
-Earthquake/Rock Slide/Superpower
Nature: Relaxed
EVs: 252 HP/4 Def/252 SDef
Item: Aggronite
Ability: Sturdy

or
-Rest
-Sleep Talk
-Heavy Slam/Iron Head
-Earthquake/Dragon Tail
Nature: Relaxed
EVs: 252 HP/4 Def/252 SDef
Item: Aggronite
Ability: Sturdy

 

[Dragonkid0207]

Thank you everyone for your suggestions! :)