Reaper of Sorrows

Pick 1 of the bearer's melee weapons. Before the bearer attacks with that weapon, pick 1 enemy unit within 1" of the bearer and roll 2D6. If the result is higher than the target's Bravery characteristic, that weapon's Rend characteristic is -3 for attacks made against that unit until the end of that phase. That weapon's Rend characteristic is -4 instead of -3 if the target is terrified.