Corrin activates Dragon Fang and sprouts wings from their back right before ascending into the air, accompanied with splashes of water, before spreading their wings at the end of the flight. While taking off or during ascension, any opponents caught in Corrin’s wings will be damaged and dragged along. Being in contact with an opponent at takeoff deals 4% damage, and the actual ascent can deal as much as 9% over multiple hitboxes (13% total). The move can potentially KO as high as 155%. The water created by the move's takeoff can push opponents if they're too far away to hit.
Before take-off, the angle of the ascent can be altered.
Corrin has complete invincibility for a split second during the move's startup. With good timing, this can protect against edge-guarding and counter almost anything, including grabs. However, there are times via the aforementioned push effect, it's possible for the final hit to miss, especially if either guided improperly or if the victim uses Smash DI out of the other hits.
Special Move customization was added in Super Smash Bros. 4. These are the variations:
Like the other DLC characters, Corrin lacks custom move variations.
In Fire Emblem Fates, the Nohr Prince and Nohr Princess classes have access to the skill Dragon Fang, which allows the user to transform parts of their body (if not currently wielding a Dragonstone) to attack. This move appears to be inspired by the overworld animation of the Dragon's movement (alternatively the Nohr Prince and Nohr Princess class lines' dragonstone animations) in which the user is shown using their wings for transportation.