Pokémon Rejuvenation - Nim 3 (Electric/Ground Dual Type)

Difficulty: 8/10
Torterra comes back! After all this time he's back! The main reason why I needed Torterra for this is because of its unique combination of Heavy Slam and having powder immunity thanks to being a Grass-type. This lets me focus on the Aromatisse and kill it in one fell swoop, avoiding getting Trick Room set up on me. The rest of the fight from there was improv, but it happened to work out.
Chapter 14 Electric types:
Rotom (Lost Castle, after completing Narcissa's quest)
Chapter 14 Ground types:
Gible (Field encounter, Zone Zero)
Zygarde-10% (Reward for obtaining 100 Zygarde Cells and 1 Zygarde Core)
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.