PLEASE HELP? Who do I replace?

[THE MASTER ARCEUS]

I am trying to have a good competitive team. Right now I have:

Jolteon- Max Speed and Almost Max Sp Attack EV

Mega Alakazam- Max Speed and near Max SP Attack EV- Mild Nature

Gyrados- Max Speed and near max Attack EV- Adamant nature

Mega Salamence- Max Speed and Near max Attack EV- Jolly Nature

Dragonite- Max Speed and near Max Attack EV- Jolly Nature

Tyrantrum- Max Attack and near Max speed EV- Adamant Nature, Strong Jaw


Now I want to replace one of my team with a Mega Sceptile. Which Pokemon should I replace in my team for the best competitive play?

 

[5qwerty]

Note that you can't have more than 1 Pokémon Mega-Evolve per battle. You also have way too many Dragon-type Pokémon on your team.

What format are you building for?

 

[THE MASTER ARCEUS]

Note that you can't have more than 1 Pokémon Mega-Evolve per battle. You also have way too many Dragon-type Pokémon on your team.

What format are you building for?

If I have too much Dragon types, Should I remove Tyrantrum for Mega Sceptile

 

[5qwerty]

If I have too much Dragon types, Should I remove Tyrantrum for Mega Sceptile

Mega-Sceptile is also a Dragon Type.

 

[ShanWow]

Now I want to replace one of my team with a Mega Sceptile. Which Pokemon should I replace in my team for the best competitive play?

As Squirty(5qwerty) already mentioned, you can only Mega Evolve once per battle so logical choice would be to remove Mega Alakazam and Mega Salamence if you really want Mega Sceptile. Mega Salamence is also considered an Uber Pokemon so you wouldn't be able to play OU with this team. If you're building for Ubers that's fine but your team is really lacking the fire power to deal with the monsters in the tier.

If you want to build a competitive team for OU, you need to reduce the amount of Dragons as Fairies and Weavile will annihilate your team. Jolteon isn't very strong and I would recommend switching it out (Mega Sceptile can also absorb Electric type moves while being faster) for something else.

In the future please include items/abilities/exact EVs/movesets in your post. You could even add a little explanation for each Pokemon as to why they are on the team though most of us can extrapolate that info from the sets they're running.