Repeatable Switch ins to
Serperior are:
Guaranteed:
Situational:
Source: OU Checks Compendium (
dl.dropboxusercontent.com/../OU_Checks_by_Threat_Level.html#serperior%20checks )
of those, the really viable options on Stall / Semi stall would be
Megasaur, Talon, Malt, ZardY, Amoonguss, Tornadus-T. (I don't like the ones with stealth rock weakness unless it's a mega sableye team or a starmie team.)
Note that Chansey should currently be running 252sdef, due to Manaphy and Serperior.
(252hp 0sdef Chansey can easily lose to Manaphy even
with no tail glow with no rain dance.
252sdef with Eviolite can stall out itemless Serperior's Leaf storm.
+6 252 SpA Serperior Leaf Storm vs. 0 HP / 252 SpD Eviolite Chansey: 300-354 (46.8 - 55.2%)
+6 252 SpA Serperior Leaf Storm vs. 252 HP / 0 SpD Eviolite Chansey: 376-444 (53.4 - 63%)).
(Non Substitute) Serperior is one of those stall breakers that can get shut down by gothitelle with a trick, since it now gets walled by most grass resists and Chansey.
There is a lot of such stall breakers, but note that it can only shut down one of them per game and can be overwhelmed if two are on one team. [Similar to counter skarm which probably won't live to beat another threat if something sets up to +6 on it and it goes down to sturdy before killing with counter].
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Stall breakers crippled and effectively neutralized by
Gothitelle:
(taunt)
(cm)
(rain dance)
(nasty plot + heal bell)
Furthermore the following can be revenge killed after a bit of chip damage:
(no whisp, no cm)
(Mirror coat revenge kills Taunt + 3 attacks Gardevoir after one taunt has been used, if it is around 50% health (such that the return damage from focus blast kills it).)
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Edit: One stall breaker that's largely overlooked is Nasty Plot + Heal Bell
Togekiss. Repeatable Switch ins are just
.
Gothitelle can trick a scarf onto it, but with a few flinches it can break trough even chansey with 252 sdef and eviolite and still obliterate the stall team.
(+2 252+ SpA Togekiss Air Slash vs. 0 HP / 252 SpD Eviolite Chansey: 130-154 (20.2 - 24%) -- 65.1% chance to 4HKO after Stealth Rock.
21.6% chance to get three flinches in a row and kill chansey at +2 even if they sacc something to get it in.
36% chance to get two flinches in a row and kill chansey if it switches into +2 scarf tricked Togekiss.)
Edit2: The reason for this is that Togekiss doesn't perform very well on an offensive team facing offense. It is, however, an excellent win condition for stall vs stall.