When performing Storming Heart, Amy blows a kiss with her right hand in the direction of the camera while saying "Yeah!". She then creates a small but concentrated whirlwind, made of several transparent pink hearts that ensnare her opponent. In gameplay, Storming Heart wraps around the opponent wherever they might be, and when it hits, it both causes damage and impedes the opponent's movements. It is nearly impossible to avoid, unless the other player is Metal Sonic, who can use his Black Shield to block it.
Storming Heart can only be performed by the player by playing as Amy in the games' two-player mode. To use it, the player must press // on the ground after collecting twenty Rings. To use it again, the player has to collect another twenty Rings.