Gardevoir

Psychic

Mega Gardevoir fills a supportive role as a Wish passer thanks to its part-Fairy typing, solid special bulk, and Will-O-Wisp. Because of its outstanding Special Attack, serviceable Speed tier, and Pixilate-boosted Hyper Voice, Mega Gardevoir also has a remarkable offensive presence that shines against Dark and Dragon teams. Mega Gardevoir's part-Fairy typing makes it immune to Dragon and neutral to Dark and Bug, allowing it to better take on Dragonite, Mega Sharpedo, and Heracross. However, it has low HP for a Wish user, and even with investment, Mega Gardevoir is still unable to deal with faster physical wallbreakers. It also competes with Mega Latias and Mega Gallade for a slot. Mega Latias can switch into special wallbreakers like Landorus, and Mega Charizard Y, while Mega Gallade poses a major threat to Normal, Steel, and Psychic teams with its STAB Fighting-type coverage and Knock Off + Shadow Sneak.

Fairy

Gardevoir is a great revenge killer on Fairy teams because of its high Special Attack, Psychic-type STAB moves to deal with Poison-types, and support options in Healing Wish and Trick. Trace allows Gardevoir to check weather sweepers like Swift Swim Kingdra and Sand Rush Excadrill. However, due to its lackluster Speed for a revenge killer, faster Pokemon like Choice Scarf Terrakion and Choice Scarf Victini can outspeed and OHKO it. Its poor Defense leaves it vulnerable to any physical attack. Despite its high Special Attack, Gardevoir has a hard time getting rid of specially defensive Pokemon like Chansey and Jirachi.