Meteor Smashes are an effective technique, that, once contact has been made, causes the victim player to be sent flying downwards. They are most useful if you use them when attacking a recovering opponent. Some examples of these are Wolf's Aerial+↓+A, and Toon Link's Aerial+↓+A, but Toon Link's send himself flying downwards as well. So take caution, as some characters risk losing a life when a Metoer Smash is performed. Test some characters to see if you can find some Meteor Smashes, then use it to your advatage!