The Marks of Chaos have all been redone. A hero/lord must have the same mark as the unit it joins. This ends the era of min/maxing marks for the most part, but I welcome the change.
Slaneesh - Auto-pass any Fear, Terror, or Panic test.
Tzeentch - Gain a 6+ ward save or improve the existing one by +1.
Khorne - Model has frenzy.
Nurgle - Enemy models have -1 to hit you in close combat.
Right away, Nurgle seems to be the most interesting mark and good synergy with Chaos Warriors since hitting them on 5s, having 3+ armor, 6+ parry, then possibly Regeneration from the Nurgle lore seems nasty. The Nurgle lore can also further lower enemy toughness and WS, so I am seeing connections there.
As much as it pains me to admit, Tzeentch magic is terrible now. If you hit a unit with magic with Warpflame property (all of the spells), and the enemy unit passes a toughness test, they can gain Regeneration (6+) or improve their existing regen by +1. If they fail, D3 enemy models take hits with no armor save.





