YABO
King Turt
The primary issue that I have with Serperior is like others have said, that it sets up at the same time that it is attacking. With many common set up sweepers you can cut its sweep short by basically sacking the current mon you have in to knock it into range for something else on your team. An example of this would be staying in on NP PZ with your 50% Swampert to fire off an EQ and put it into range of your Entei's Extremespeed. That's just one example of "not letting something set up for free" per se. Serperior doesn't have this difficulty as even if you stay in, it's just going to kill you and receive a free +2 as well.You guys are acting like Serp is the second coming of Jesus. Despite Leaf Storm doing "damage" (it's pitifully weak without boosts and especially without Life Orb) its still needs at least one free turn get set up and start doing damage. I just wanna ask how that's different from any set up sweeper in any tier... ever. Those free turns aren't all that easy to come by tbh, like people much smarter than myself have pointed out (Hikari/Koko). And lastly, holy crap if Koko doesn't want to ban it, it's clearly not broken (/badjoke).
I'm just tired of UU players wanting to ban anything that has attacks and does damage.
Also, to address Roserade and Amoonguss very briefly, I'd like to point out that by far the most common partner for Serperior is Mega Aerodactyl who handles these two remarkably well. I know that shouldn't reflect on Serperior necessarily, but the ease with which you can support Serp is almost troubling. Regardless, voting ban/no ban on something is completely subjective and I'm not sure why everyone gets their panties in a bunch when someone disagrees with them.