Toxic Spikes Hex team (Anything goes gen 8)

[Jackmahoy]

Aside from the obvious overreliance on poison types, is there anything I can improve?

Mew @ Leftovers
Ability: Synchronize
EVs: 128 Def / 128 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Toxic Spikes
- Baton Pass
- Nasty Plot
- Protect

My lead to setup toxic spikes, get stat boosts for a baton pass into one of my sweepers, and protect to stall if it comes to it.

Scolipede @ Black Sludge
Ability: Speed Boost
EVs: 252 HP / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Toxic Spikes
- Protect
- Substitute
- Toxic

Another toxic spikes setup in case anything happens to mew and a more dedicated staller.

Gengar @ Black Sludge
Ability: Cursed Body
Gigantamax: Yes
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Hex
- Dark Pulse
- Giga Drain
- Psychic

My main dynamaxing sweeper with hex to take advantage of poison and other moves for coverage.

Nihilego @ Black Sludge
Ability: Beast Boost
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Hex
- Dazzling Gleam
- Thunderbolt
- Protect

Another hex sweeper with a couple different coverage moves.

Naganadel@ Life Orb
Ability: Beast Boost
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Heat Wave
- Hex
- Thunderbolt
- Dragon Pulse

Hex sweeper with fire type move to take out steel types and thunderbolt to take out flying types.

Tyranitar (M) @ Leftovers
Ability: Sand Stream
EVs: 4 HP / 252 Def / 252 SpD
- Avalanche
- Crunch
- Earthquake
- Stone Edge

Tank for some different coverage to chip away at things.

 

[Dusk Mage Necrozma]

This is really not fit for AG.
In AG pretty much the only viable things are high BST legendaries like Kyogre. If you don’t want to be a “legendary spammer” then don’t play AG, the tier for all the broken legendaries.