Here's a list of what I was thinking of using for the battle tower. I'd like to keep Vespiquen and Mamoswine. Slowbro seemed like a good 3rd as a defensive, special attack user who could cover the rest of the teams weaknesses. Other opinions on a third would be nice. These builds are pretty much copied from smogon, so lmk if I should change anything for the battle tower. Thanks.
VESPIQUEN - Leftovers
EVs: 248 HP / 8 Def / 252 SpD
Careful Nature
- Attack Order
- Toxic
- Substitute
- Heal Order
MAMOSWINE - Focus Sash
Ability: Oblivious
EVs: 252 Atk / 4 Def / 252 Spe
Adamant Nature
- Stone Edge
- Earthquake
- Ice Shard
- Endeavor
SLOWBRO - Shell Bell
Ability: Own Tempo
EVs: 252 HP / 176 Def / 80 SpD
Bold Nature
- Calm Mind
- Surf
- Slack Off
- Psychic
VESPIQUEN - Leftovers
EVs: 248 HP / 8 Def / 252 SpD
Careful Nature
- Attack Order
- Toxic
- Substitute
- Heal Order
MAMOSWINE - Focus Sash
Ability: Oblivious
EVs: 252 Atk / 4 Def / 252 Spe
Adamant Nature
- Stone Edge
- Earthquake
- Ice Shard
- Endeavor
SLOWBRO - Shell Bell
Ability: Own Tempo
EVs: 252 HP / 176 Def / 80 SpD
Bold Nature
- Calm Mind
- Surf
- Slack Off
- Psychic