Sslyth

Re-roll any Run or Charge distance dice.

Roll a D6 each time an unsaved Wound is suffered. On a 4 or less, you must take the
Wound as normal. On a 5+, the unsaved Wound is discounted treat it as having been
saved.
  Feel No Pain saves may not be taken against Destroyer attacks or against unsaved
Wounds that have the Instant Death special rule.