Cresselia

Cresselia shines in VGC as an incredibly bulky Trick Room setter with access to Lunar Blessing. Cresselia is a great check to Amoonguss and Urshifu-R, nullifying Spore with Lunar Blessing and pressuring the latter with a 2HKO.

Cresselia's strongest partner is Ursaluna, as it's a strong Trick Room sweeper that appreciates Lunar Blessing negating the burn chip damage. Cresselia's Levitate also allows Ursaluna to freely click Earthquake. Cresselia also appreciates Pokemon like Amoonguss and Iron Hands, which help get up Trick Room and act as threats under Trick Room themselves.

Cresselia struggles against Incineroar, as Fake Out can allow Incineroar's partner to get off another hit, which can be the difference between setting up Trick Room and not. Cresselia also faces issues against Farigiraf, which can reverse or Imprison Trick Room. Tornadus can also prove to be difficult, as Taunt prevents Trick Room from going up and takes advantage of Cresselia's passivity.