Heres a random one from me.
3 vs 3 (one at a time)
Only Bug type Pokemon allowed. Abilities are in effect.
Arena is a standard Indigo arena but with Long Grass and some overhanging trees around the edges. Although the trees dont crowd the arena they do lean in such a way to provide dense overhead foliage that would severely hinder repeated use of flying type attacks, (Damage/Entanglement etc) without causing an unfair obstacle to normal flying for Pokemon such as Butterfree etc. (Basically, stop Spamming Aerial Ace!)
I will start with Paras (M - Effect Spore)