Iron Crown

Iron Crown is an excellent choice for offensive teams looking to take advantage of the powerful move Expanding Force thanks to its well-rounded stats and access to Booster Energy. It performs best against frailer offensive teams consisting of Pokemon that do not resist Expanding Force, such as Tornadus, Landorus, and Urshifu-R.

Although it can be used as a sweeper early-game to soften opposing teams, it is usually better to save Iron Crown for the late-game when its checks have been sufficiently weakened for it to sweep.

Indeedee-F is by far Iron Crown's best teammate, offering role compression as a Psychic Terrain setter and redirector. Access to Helping Hand also further amplifies its partner's ridiculous damage output.

Iron Crown's best counters are Dark- and Steel-types, namely Incineroar, Kingambit, Archaludon, and Gholdengo, all of which resist both of Iron Crown's STAB moves.

Therefore, Iron Crown appreciates Pokemon that can help remove these threats consistently, such as Landorus, Entei, and Urshifu-R. In return, Iron Crown can pressure opposing Urshifu-R and Amoonguss.

Rillaboom is another noteworthy check, as it is able to safely pivot in and override Psychic Terrain, weakening Expanding Force significantly. Other Pokemon with access to Ice Spinner like Chien-Pao and Dragonite can also be used to remove Psychic Terrain.

Faster Pokemon like Chien-Pao and Flutter Mane serve as good checks as well, but they have to watch out for Follow Me from Indeedee-F as they are vulnerable to Tachyon Cutter.