Rate my Nat-Dex OU Psy-Terrain Team

Question

Tapu Lele @ Choice Scarf
Ability: Psychic Surge
Hidden Power: Fire
Tera Type: Fire
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Psychic
- Psyshock
- Moonblast
- Hidden Power [Fire]

This is my terrain setter and breaker. Choice scarf combined with immunity to priority means I can almost always move first. Moveset gives good coverage and lets me hit special walls if needed.

Polteageist @ Focus Sash
Ability: Weak Armor
Tera Type: Fighting
EVs: 252 SpA / 4 SpD / 252 Spe
Modest Nature
- Shell Smash
- Stored Power
- Shadow Ball
- Tera Blast

As the strongest psy-terrain user, this guy acts as an amazing sweeper. Focus sash is much harder to beat without priority. Terrain also boosts stored power, which is enough to OHKO most things after a shell smash. Other moves are coverage.

Dragalge (F) @ Dragonium Z
Ability: Adaptability
Shiny: Yes
Tera Type: Steel
EVs: 252 HP / 200 Def / 56 Spe
Bold Nature
- Sludge Bomb
- Draco Meteor
- Toxic Spikes
- Flip Turn

Toxic spikes may not be the strongest set of hazards, but it can force spinners to come out giving my sweeper a chance to setup and toxic spikes still break focus sash. Other than that I needed a good defensive pivot that can use a Z-move and lets me access a pivot move.

Moltres @ Heavy-Duty Boots
Ability: Flame Body
Tera Type: Ground
EVs: 252 HP / 252 Def / 4 SpD
Bold Nature
- Flamethrower
- Scorching Sands
- Roost
- U-turn

Another great defensive pivot with good coverage and a pivoting move.

Kingambit (M) @ Leftovers
Ability: Supreme Overlord
Shiny: Yes
Tera Type: Dark
EVs: 172 HP / 252 Atk / 84 Spe
Adamant Nature
- Knock Off
- Sucker Punch
- Low Kick
- Swords Dance

I like tanky Kingambit. It's not bad later in the game, especially if I lose terrain, and knock off is good utility in terrain.

Terapagos-Terastal (M) @ Heavy-Duty Boots
Ability: Tera Shell
Tera Type: Stellar
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
- Tera Starstorm
- Ice Beam
- Calm Mind
- Rapid Spin

I needed a spinner, and thus I have one. Calm mind and ice beam can be very threatening in a variety of situations.

Comments

This team looks ok to me, but here are some changes:

You don't seem to have a mega, and megas aren't necessary, but here's one
Scizor-Mega @ Scizorite  
Ability: Technician  
Tera Type: Bug  
EVs: 248 HP / 8 Def / 252 SpD  
Impish Nature  
- Bullet Punch  
- Swords Dance  
- Knock Off  
- Roost
here's a specially defensive scizor to replace kingambit if you want. Bullet punch is Prio boosted by technician, swords dance is setup, knock off for utility, and roost for recovery. With Scizor, you won't have to gamble with sucker punch, and it gets healing with roost.

Also, consider replacing scorching sands with toxic, as it works better as utility.

these are just my opinions on experience, so feel free to keep your team as it is. Otherwise, have fun!