Assault on Tokyo
Field Type: Neutral
Complexity: Moderate
Format: Any
Restrictions: All Pokemon have a size class of 7 and a weight class of 12, all attacks ignore weight restrictions, random pokemon gets attacked by the SDF at the end of every round
Description: The battlefield is Japan's capital in all of its entirety, from the heart of Shinjuku all the way out to the city limits. How could both trainers' pokemon possibly find each other in such a crowded metropolis?
When the pokemon are 500 feet tall, that's how.
In short, we're playing Godzilla here. All pokemon are treated as if their size class was 7 and their weight class 12. Furthermore, any weight restrictions on attacks (such as psychic) can be ignored for this battle. There's enough seawater to use water attacks, enough vegetation (natural or otherwise) to use Grass Knot, and enough buildings/tanks/laser cannons to serve for certain rock moves.
Lastly, At the end of each round, RNG one of the pokemon currently in play. The Japanese self-defense force will attack that pokemon for a fixed 10 damage.