Greninja (M) @ Life Orb
Ability: Battle Bond
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
- Surf
- Ice Beam
- Dark Pulse
- U-turn

Magnezone @ Assault Vest
Ability: Magnet Pull
EVs: 82 HP / 166 Def / 252 SpA / 8 SpD
Modest Nature
IVs: 1 Atk
- Hidden Power [Fire]
- Thunderbolt
- Volt Switch
- Flash Cannon

Landorus-Therian @ Rocky Helmet
Ability: Intimidate
EVs: 128 HP / 100 Atk / 116 Def / 164 SpD
Adamant Nature
- Stealth Rock
- Knock Off
- Hidden Power [Ice]
- Earthquake

Latios @ Soul Dew
Ability: Levitate
EVs: 116 HP / 252 SpA / 140 Spe
Timid Nature
IVs: 0 Atk
- Draco Meteor
- Psychic
- Recover
- Defog

Lopunny-Mega @ Lopunnite
Ability: Scrappy
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Fake Out
- Return
- Drain Punch
- Ice Punch

Muk-Alola @ Ghostium Z
Ability: Poison Touch
EVs: 252 HP / 252 Atk / 4 SpA
Brave Nature
- Curse
- Poison Jab
- Crunch
- Fire Blast

Could you keep Muk? I'm also having trouble with Steel types like Bisharp and Magearna.