Hmmm... I have to think about this a little. On the one hand, I would love to see this in game and to a degree the actual games have implemented this (Electric, grassy, and misty terrain). However, I also think that the effects should make some intuitive sense and have some effect that the player and the opponent can use to their advantage, as opposed to Herp-de-Derp Julia and co are immune to ground types and can damage ground types with electric moves. For example, Randomus's gym, aside from certain actions like switching pokemon or healing has no priority or has a permanent trick room effec