Jynx

It's a sad state of affairs for Jynx in Stadium OU. The nerfs to sleep and addition of Team Preview make its main niche—the one-two punch of a speedy Lovely Kiss followed by a Blizzard freeze—far rarer and much less impactful. Regardless, being the most reliable sleeper available is still a decent niche to have, and Jynx can pave the way for teammates like Rhydon or Zapdos to bring down the hammer thanks to the status requiring a turn for the foe to wake up. Additionally, Jynx's other traits remain relevant: Ice-type STAB gives it a fantastic matchup against Pokemon like Exeggutor, and its Psychic resistance lets it handle opposing Psychic-types like Alakazam and non-Surf Starmie. However, its drawbacks remain; Jynx's limited offensive coverage and barely good enough Special leave it easily stopped by Pokemon like Chansey and Starmie, and it also struggles to break past Substitute, a somewhat frequent move in Stadium OU. Furthermore, its pitiful physical bulk means Pokemon like Snorlax and Tauros can effortlessly exploit it to score big damage on Jynx's team as it's forced out. Double-Edge being much more common on Exeggutor also hurts it greatly, as it has a much harder time using Rest in front of it.