Pokémon Rejuvenation - Aevia (Electric/Ground Dual Type)

Difficulty: 8/10
This fight is different depending on which protagonist character you chose or got from the personality quiz. Since my protagonist character is Aevia, I fought Aevia here. The protagonist fight is optional to win and losing doesn't affect plot or character relationships at all. As for the actual fight itself, Aevia brings a decently tough team with fast attackers in Whimsicott and Venomoth, as well as bulky ones in Mega Lapras and Mudsdale. That said, her team doesn't benefit much from the terrain and has little synergy with each other, so it's possible to break through.
Chapter 15 Electric types:
Aevian Lampent (Evolve Aevian Litwick: Axis Factory, if not Mystery Egg)
Chapter 15 Ground types:
None this chapter.
Rules:
I can only use Electric- or Ground-type Pokémon in battle. I can have non-Electric- or Ground-type Pokémon on my team, but they can't contribute to the battle in any way.
I'm also not allowing myself to use Pokémon that eventually evolve into Electric- or Ground-types, but aren't Electric- or Ground-types themselves (For example, Mudkip would be disallowed, but Marshtomp wouldn't be)
I can't use two of the same Pokémon.
I can't use items in battle.
The whole run is being done on Normal mode. I'm not insane enough to put myself through Intense mode, sorry.