Duosion

While often less favored over Musharna, Duosion sets itself apart through Magic Guard, preventing it from being hindered by Toxic and other forms of residual damage, unlike other Calm Mind users. As opposed to Musharna, Duosion's recovery is not hindered by weather conditions such as rain and hail and has more PP, allowing it to set up for a longer period of time. Said characteristics with the combination of Calm Mind and Acid Armor make Duosion very difficult to take down, causing it to be a terror against more balance- or defensively-inclined teams. Duosion is also less passive compared to most Calm Mind users thanks to its naturally high Special Attack stat, being able to hit fairly hard after a boost or two. However, reliance on Eviolite plus its pure Psychic typing means that it's more vulnerable to Knock Off than most Pokemon. The Pursuit weakness only makes matters worse when it's matched up against Skuntank in particular, which is able to shut down Duosion with Taunt as well. Duosion also faces competition from other Psychic-types, particularly Musharna and Xatu, as the former has much greater bulk before setting up, has access to Stored Power, and is not nearly as weak to Knock Off, while the latter has Magic Bounce, which provides pseudo-hazard control.