Combat Arts are special moves that players of CrossWorlds can use. There are four types of Combat Arts, aligned with the four basic combat skills: Melee Arts, Throw Arts, Dash Arts and Guard Arts. What you are doing while starting a combat art (standing, guarding, dashing, and aiming) determines the type of combat art performed. For example, if you use your combat art while guarding you will use a Guard Art, and if you use your combat art while dashing you will use a Dash Art. There are three levels of combat arts, and once unlocked the higher-level arts can be used by holding the Special key for longer, causing Lea to charge up. Higher level arts cost more to use, but are also more powerful.
Each element has its own set of combat arts, that can only be used while in that elemental mode. For every combination of type, level and element, there are between zero and two combat arts available. In the case where there are two, they can be exchanged using the Circuit tree Swap Branches feature. Lea has a total of 92 combat arts - 16 neutral and 19 for each element.
In CrossWorlds, each class has a unique pool of combat arts, making a total of 460 combat arts. In practice, however, only a few select combat arts from the non-Spheromancer pools will be seen in-game.
Using a combat art uses SP (Special Points), with higher-level combat arts costing more (1 for level 1, 3 for level 2, and 6 for level 3). SP can be regained by attacking enemies (during combat) or letting them auto-regenerate to one SP point, two after Faj'ro Temple, three after Grand Krys'kajo, and four after Azure Archipelago (A New Home DLC).