Callous Competition
At the start of the battle your Drukhari units are winning the wager. Each time a Drukhari unit from your army destroys an enemy unit, Drukhari units are winning; each time a Harlequins unit destroys an enemy unit, Harlequins units are winning; while one side is winning the other is losing. Each time a Drukhari or Harlequins model makes an attack, if its unit is winning the wager re-roll a Hit roll of 1, and if its unit is losing re-roll a Hit roll of 1 and a Wound roll of 1 instead. The detachment also carries its own Harlequins allowance of up to 500 points at Incursion, 1,000 at Strike Force and 1,500 at Onslaught, no Harlequins model from your army can be your Warlord, and selecting it means you cannot use the Corsairs and Travelling Players army rule.