The shine spike is one of Fox's edge-guarding technique. It consists of using Fox's down B to spike an opponent who is already off of the stage down and away, to prevent their recovery. Note that the term 'spike' is used loosely here, because it is not technically a spike, but what many like to call a 'pseudo-spike'. This is because it doesn't send the opponent straight down, but rather, at an angle the side. Other infamous pseudspikes are Link's Spin Slash and Peach's D-smash.