Pokémon Rejuvenation - Cassandra (Electric/Ground Dual Type)

Difficulty: 7/10
My learning of the AI over the course of this playthrough comes in handy, although it doesn't make input-reading Sucker Punches any less frustrating to deal with. Her team doesn't massively benefit from the field, so it's not the worst thing in the world.
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.