Whenever this player suffers a Casualty, before making the Casualty Roll for them, roll a D6.
On a 1‑3, this player suffers the Casualty; make the Casualty Roll as normal. On a 4+, this player regenerates and ignores the Casualty (though any Star Player Points earned for causing the Casualty are still earned) and is instead placed in their team's Reserves Box.