Xatu

Xatu has a niche in the OU metagame as the best Magic Bounce user and one of the best sources of entry hazard control. Xatu is able to completely shut down passive Pokemon like Ferrothorn, Skarmory, and Hippowdon while also being a soft check to most Ground- and Grass-types. However, it has mediocre base stats, a shallow offensive movepool, and an exploitable defensive typing that makes it vulnerable to a lot of the metagame's offensive threats, including very effective Stealth Rock users like Garchomp, Heatran, and Jirachi. Once these Pokemon set Stealth Rock, Xatu's Stealth Rock weakness becomes a thorn in its side.