Rainbow ball, or the backstep roll, is an effective way to punish projectiles and is an effective anti-air tool, but at close range it is a bad idea to use the backstep roll because you are vunerable during the flip. One good thing about this move is that, if blocked, it bounces you away from the opponent, avoiding anti-airs. The EX version allows you to control the trajectory of the attack, executes faster and causes more damage.
Rainbow ball, or the backstep roll, is an effective way to punish projectiles and is an effective anti-air tool, but at close range it is a bad idea to use the backstep roll because you are vunerable during the flip. One good thing about this move is that, if blocked, it bounces you away from the opponent, avoiding anti-airs. The EX version allows you to control the trajectory of the attack, executes faster and causes more damage.