Need help with my team

[Lightningz]

Looking to get some advice for items and move sets for this team. One of the first teams I have built for casual competition and I really don't know a whole lot about what is/isn't viable. Try not to be to harsh if it's as terrible as I suspect but again any advice is welcome.
Thanks!

Zekrom (Rash)- Dragon/Electric
[Moves] Fusion Bolt (Electric)/Draco Meteor (Dragon)/ Fly (Flying)/ Zen Headbutt (Psychic)

Tyranitar (Adamant)- Rock/ Dark
[Moves] Earthquake (Ground)/ Stone Edge (Rock)/ Crunch (Dark)/ Brick Break (Fighting)

Mewtwo (Jolly)-Psychic
[Moves] Psychic (Psychic)/ Psystrike (Psychic)/ Recover (Normal)/ Aura Sphere (Fighting)

Heatran (Sassy)-Fire/ Steel
[Moves] Flamethrower (Fire)/ Fire Blast (Fire)/ Flash Cannon (Steel)/ Crunch (Dark)

Giratina-O (Timid)-Dragon/Ghost
[Moves]Draco Meteor (Dragon)/ Shadow Force (Ghost)/ Dragon Tail (Dragon)/ Thunder (Electric)

Gyrados (Jolly)-Water/Flying
[Moves] Hydro Pump (Water)/ Ice Fang (Ice)/ Surf (Water)/ Fire Blast (Fire)

 

[Aurafire]

For now I think thread is better suited for the In-Game forum since it's for casual purposes. Moving it there now.