Daemon of Slaanesh
(Rule)Description: A character with a Mark of Chaos cannot join a unit that has a different Mark of Chaos. A character with a Mark of Chaos cannot join a unit that has already been joined by a character that has a different Mark of Chaos.
A Daemon of Slaanesh has Hatred (Daemons of Khorne) and Armour Piercing (2).
For the purpose of Marks of Chaos, treat "Daemon of" the same as "Mark of" at all times.