Pledges to the Dark Prince
At the start of the battle round, if your Warlord is on the battlefield, you must pledge a number to Slaanesh representing how many enemy units will be destroyed this battle round. At the end of the battle round, if the number destroyed is greater than or equal to your pledge, you gain Pact points equal to your pledge; otherwise you gain none and your Warlord suffers D3 mortal wounds. Emperor's Children units then gain cumulative army-wide bonuses by total Pact points gained during the battle: at 1+ re-roll hit rolls of 1; at 3+ re-roll wound rolls of 1; at 5+ melee weapons gain [LETHAL HITS] and [SUSTAINED HITS 1]; at 7+ a Critical Hit is scored on an unmodified hit roll of 5+. Two clauses decide how it plays: the thresholds read points GAINED during the battle, so the total is cumulative and never spent, and a pledge is compulsory while your Warlord is on the table, so there is no safe option of pledging nothing.