Best team for Grandma "Grandma's Gentle Giants"

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Toxapex @ Black Sludge

Ability: Regenerator

EVs: 252 HP / 252 Def / 4 SpD

Bold Nature

- Scald

- Recover

- Haze

- Toxic Spikes

Ferrothorn @ Leftovers

Ability: Iron Barbs

EVs: 252 HP / 48 Atk / 208 SpD

Relaxed Nature

- Gyro Ball

- Power Whip

- Stealth Rock

- Leech Seed

Volcarona @ Heavy-Duty Boots

Ability: Flame Body

EVs: 252 SpA / 4 SpD / 252 Spe

Timid Nature

- Quiver Dance

- Flamethrower

- Bug Buzz

- Giga Drain

Landorus-Therian (M) @ Choice Scarf

Ability: Intimidate

EVs: 252 Atk / 4 Def / 252 Spe

Jolly Nature

- Earthquake

- U-turn

- Stone Edge

- Knock Off

Scizor-Mega @ Scizorite

Ability: Technician

EVs: 252 HP / 252 Atk / 4 SpD

Adamant Nature

- Bullet Punch

- U-turn

- Roost

- Swords Dance

Tapu Fini @ Leftovers

Ability: Misty Surge

EVs: 252 HP / 168 Def / 88 SpD

Bold Nature

- Moonblast

- Scald

- Defog

- Taunt