>>1823607
This ability; obtained by completing the Seven-Day-Start Dash from when you first begin playing the game. AFAIK you only get one shot at it, and it's a pretty useful one to have.
If you missed it, then sorry, kind of a bummer, but if it's any consolation, there's stuff that can provide similar benefits for HP and Attack, or will give more for focusing on one or the other, it's just they won't have the extra -2 cost reduction or the nice gold look.