I have seen recently that there is a lot of abuse of chatter. Reason why I thought of using the following set:
Rayquaza-Mega @ Safety Goggles
Ability: Soundproof
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
- Chatter
- Boomburst
- Tail Glow
- Spiky Shield
The advantage is that u can actually safely Tail Glow on imposter Chansey and Stall it out.When it switches out whatever pokemon comes in gets OHKO'ed with the chatter or boomburst. In addition to it,
PARTING SHOT fails.The Spiky shield is sort of a check to prevent -ates from messing around. Also just in case u are out of all its moves , run A faster prankster with D-Bond. I prefer Arceus.Some people may think of it as a Gale Wings set when u first use chatter and thus may not move into MMX. Works pretty well imo. Even players in the top 10 can be outwitted . On the downside it can get totally blocked by double imposter.
http://replay.pokemonshowdown.com/balancedhackmons-207115733