? What? Nope. Serperior, Contrary, Wide Lens, Toxic, Gastro, Giga Drain, Leaf Storm. Since 95% of competetive players Run Kanga, none of them know what to do about the threat of a speedy serperior running Gastro and Toxic becomes the move of choice. The thing is, both of these pokemon have the ability to respond to switch ins. Heck, Leaf Storm is a safe Switch in prediction move.
See, you can't think oustside of the box. I am saying this strategy has gotten me first place in tournaments with very real prize support and you are still thinking of Smogon. I am not making Serperior less effective... Gastro Acid works on all Pokemon. It is great. There are quite a few Pokemon that rely heavily on their abilities. Look at... Serperior, Kangaskhan, Blaziken, Conkeldurr, Azumarill, Magnezone, Scizor... Do I need to go on? The utility of Knock off is great too. I mean, saying it is no good because it goes away in a turn is like saying confusion is a terrible utility. A Switch in is just a turn for me to set up, if the opponent feels that is worth their time.