This skill is a Special Rule that is only available to specific Star Players. Please visit this page to find a list of current and past Blood Bowl Star Players.
Blind Rage
Akhorne may choose to re-roll the D6 when rolling for the Dauntless skill.
Unlike most of the Star Player special rules, Blind Rage can be rolled on every failed Dauntless attempt. With a strength of 1, along with Frenzy, Akhorne will likely be rolling Dauntless on nearly every Block or Blitz action that they take.
So this skill could be applied twice during one frenzy attack – once for each block?
Or does another part of the rules prevent this?
You are correct, you can use it on every Dauntless roll, it isn’t limited to once per turn like some other skills.