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 of enemy units destroyed this battle round is greater than or equal to your pledge, you gain a number of Pact points equal to your pledge. Otherwise, you do not gain any Pact points this battle round and your WARLORD model suffers D3 mortal wounds.
EMPEROR’S CHILDREN units from your army gain a bonus depending on how many Pact points you have gained during the battle, as shown below (these are all cumulative).