Armada shine

Tags: shine, edgeguarding

Invented by KJH and popularized by Armada, you are able to shine Fox for about ten frames or one-sixth of a second right before he starts moving during his Up-B. If timed properly, this means that any time Fox is hit offstage and has to Up-B to recover, you are able to kill him.
— cookbook.gg

The Armada shine is the quintessential edgeguard against an opposing Fox or Falco. It's important to note that it refers specifically to the short window of time just before the up-B takes off, when it is unprotected by fire hitboxes; not just any shine on a spacie up-B.