Editing Warhammer 40,000/9th Edition Tactics/Chaos Knights (section)

===Tyrant-Class===
Your equivalent of the Dominus-class knights.
*'''Knight Tyrant:''' Can be taken in either the Castellan or the Valiant configuration and can do everything the loyalist Dominus Knights can do. Sadly, you can't mix and match their weaponry, so no Lance and Harpoon combo to delete titans outright for you! If you only bring a Knight Tyrant set up like a Castellan it'll work nicely thanks to Trail of Destruction. You have a significantly lower chance of suffering Mortal Wounds from supercharging and the Volcano Lance will be even deadlier thanks to the re-rolls. If you're running a proper Lance or a whole army of Chaos Knights, the Valiant setup is better, as it isn't as reliant on To Hit rolls as the 'Castellan'. If you can afford the points, rock the max number of Siegebreaker Cannons - Shieldbreakers are nice, but using them to snipe characters costs valuable CP. 
**Iconoclast: Vow of Dominance (can only be wounded on 4+) and the Veil of Medrengard (4++ against shooting) make this a superb choice, especially because Rotate Ion Shields costs 3 CP for the Tyrant. The Iconoclast ambition also makes the unit slightly better in close combat, although with the amount of guns a Tyrant has, you stand a chance of making its points back even if you only shoot and never charge.
**Infernal: If you're rocking the conflagration cannon and thundercoil harpoon, any Daemonic Surge effect will be beneficial. For the 'Chaostellan', Daemonic Hunger isn't that great due to the increased range of the weapons, but extra movement could always come in handy for reaching objectives. In addition, having 28 Wounds also means you can more comfortably sacrifice D3 to choose your result. Infernals also get access to Pact with the Dark Gods, which allows you to potentially bring your giant knight back to life at the end of the phase it was killed.