Rate my Gen 9 National Dex team

Question

Ferrothorn @ Leftovers
Ability: Iron Barbs
Tera Type: Water
EVs: 252 HP / 88 Def / 168 SpD
Relaxed Nature
- Stealth Rock
- Spikes
- Leech Seed
- Gyro Ball

Ferrothorn is a great lead, Leftovers to survive, Iron Barbs to be annoying, then Leech seed for even more annoying, Spikes and stealth rocks is entry hazard, Gyro Ball for Actual Damage, Tera water to deal with anyone who tries to use fire types.

Toxapex @ Black Sludge
Ability: Regenerator
Tera Type: Dark
EVs: 252 HP / 252 Def / 4 SpD
Bold Nature
- Scald
- Toxic
- Haze
- Recover

Toxapex is big wall, Sludge for living, Scald for STAB, toxic fpr a stall war, haze to assist in killing setup sweepers, recover for recovery, Tera Dark is to counter any pesky psychic types.

Corviknight @ Leftovers
Ability: Pressure
Tera Type: Fighting
EVs: 252 HP / 168 Def / 88 SpD
Impish Nature
- Defog
- Roost
- Brave Bird
- Body Press

Corviknight is my Defogger, Leftovers are yes, Defog to Defog, Roost healing, Brave Bird STAB, and body press to do massive damage, Tera fighting to further boost it.

Tapu Koko @ Choice Specs
Ability: Electric Surge
Tera Type: Fairy
EVs: 4 HP / 252 SpA / 252 Spe
Timid Nature
- Thunderbolt
- Dazzling Gleam
- Volt Switch
- Hidden Power [Ice]

Tapu Koko is THE sweeper, setting electric terrain allowing it to have 130 power on t-bolt, and also 90 power on Volt Switch, Dazzling Gleam STAB and hidden power ice to kill ground pokemon, Tera Fairy to boost dazzling gleam and remove ground weaknedss.

Rillaboom @ Choice Band
Ability: Grassy Surge
Tera Type: Grass
EVs: 4 HP / 252 Atk / 252 Spe
Adamant Nature
- Grassy Glide
- Wood Hammer
- Knock Off
- U-turn

Rillaboom with grassy surge makes sure I control terrain, Grassy Glide priority STAB. Wood Hammer STAB, Knock off to be annoying, and u-turn to pivot, Tera Grass makes Grassy Glide and Wood Hammer stronger.

Lopunny-Mega @ Lopunnite
Ability: Scrappy
Tera Type: Fighting
EVs: 252 Atk / 4 Def / 252 Spe
Jolly Nature
- High Jump Kick
- Return
- Ice Punch
- Reversal

Ah yes, my secret sweeper, Mega Lopunny does big damage, High jump kick major damage, Return for STAB, Ice punch coverage, and Reversal when low, Tera Fighting removes the fighting weakness.

I got a few main questions

1. Should I replace Lopunny for another good mega since lopunny is always making me lose after a missed high jump kick.

2. Do I immediently mega or Try to get SOME use with scrappy?

3. is my team good?

So uhm yea i guess.

Comments

I don't play National Dex OU, but if you want the little HP recovery on Toxapex, use Leftovers instead of Black Sludge. Should Toxapex use its Tera, the Black Sludge will end up hurting Toxapex instead of healing it.

Answer 1

1. Lopunny is not the best mega you could've chosen for the OU format. Mega Metagross would actually be a great choice for you considering you don't run any reliable steel type moves (gyro ball on ferrothorn can easily be countered by something faster than it, or just a regular ember), and although you have Toxapex, you don't have any damage dealing poison attacks.
   Mega Diancie could work even better considering your typings
2. I think it's best to immediately mega cuz of the fact you get those extra stat boosts, and tbf scrappy doesn't help that much in the first place. Hitting ghost type moves could've been done with Rillaboom's Knock Off
3. All in all, you have a mixed catergory of special / regular attackers, and have good set up moves, and in general this team is pretty decent. But I would personally suggest some things to keep in mind:
   • Counters for Garchomp? yes, you have tapu koko, but garchomp could run poison jab, which could have it in a tough situation
   • Landorus-T is going to be a problem, especially since your only special attacker (to counter intimidate) is an electric type, which Landorus-T is immune to.
   • You don't have anything to counter Belly Drum Clefable, or Azumaril (considering the tank and living Tapu Koko's hit)

I would personally change up the team to match the following:
Ferrothorn @ Focus Sash
Ability: Iron Barbs
Tera Type: Water
- Stealth Rock
- Power Whip
- Leech Seed
- Gyro Ball

Toxapex @ Leftovers
Ability: Regenerator
Tera Type: Dark
EVs: 252 HP / 252 Def / 4 SpD
Bold Nature
- Liquidation
- Poison Jab
- Recover
- Baneful Bunker

Gliscor @ Toxic Orb
Ability: Poison Heal
Tera Type: Steel
EVs: 252 Attack / 252 Speed / 4 HP
Jolly Nature
- Ice Fang
- Dual Wingbeat
- EQ
- Tailwind

Tapu Koko @ Choice Specs
Ability: Electric Surge
Tera Type: Flying
EVs: 4 HP / 252 SpA / 252 Spe
Timid Nature
- Thunderbolt
- Dazzling Gleam
- U-Turn
- Acrobatics

Rillaboom @ Choice Band
Ability: Grassy Surge
Tera Type: Rock
EVs: 4 HP / 252 Atk / 252 Spe
Adamant Nature
- Grassy Glide
- Fake Out
- Knock Off
- U-turn

Mega Scizor @ Scizorite
Ability: Technician
Tera Type: Rock
EVs: 252 Speed / 252 Atk / 4 Def
Adamant Nature
- Swords Dance
- Bullet Punch
- U-Turn
- Aerial Ace