Wait, if this is a/the Roman Colosseum, does that mean we can use the sand in the arena as a very weak Ground-Type attack? Mud Slap/Sand-Attack, perhaps?
Yeah, but good luck killing something with that :P
Some guy got a Magnemite, which is 4x weak to Ground, and it could potentially be used to create a pseudo Mud Sport, giving people a decent chance against Electrics. --- Other M is the One More Day of Metroid