"Grant Guard"
"Grants Guard Once to 1 ally. For the next enemy attack that would hit 1 or 2 other allies, 1 of the attacks is instead redirected to the ally with guard once. This will not redirect skills that don't deal damage. This effect will go away only if that ally redirects an attack, targeting the ally unit directly will not remove it. Units with guard once cannot have the Counter Stance status effect."