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

===Dominus Knights===
The "biggest" Knights yet (discounting the walking box that is the Porphyrion, and the ceratus chassis. GW calls it a big knight, but it isn't that much bigger than the classic knight chassis), with 28 wounds each, the usual strength and toughness of 8, a 2+/5++ and packed full of guns. But unlike the Questoris Knights these are only WS 4+ so they won't handle close combat so well.

Both knights have twin-linked melta turrets and 3 hardpoints, each of which can be equipped with either a turret with 48" Heavy 2D3 S7 AP-1 D2 Siegebreaker Cannons, or a pair of one-shot, one-per-turn 48" Heavy 1 S10 AP-4 D1d6 Shieldbreaker Missiles that ignore Invulnerable Saves.  Note that you have to take two of one, and one of the other.  If you have the points, always take the Cannons - ignoring invuln saves is fun, but unreliable.
*Shieldbreaker missiles seem weak at first, but because, of their AP, they technically ignore both invul and armour saves, making them absurdly good for sniping characters, especially those with 6 or less wounds. 

*However, the flipside is, you can still only fire one per turn. If you can afford it, make sure you think hard about whether you'd rather have the option for a 3rd missile on turn three (when, odds are, either your knight is dead or you've already won) or if you'd rather fire the extra cannons while he's still alive.

Seriously consider giving these guys the 'Ion Bulwark' warlord trait.  'Rotate Ion Shields' costs 2CP on them and they ''will'' attract a lot of fire. 

*'''Dominus Knight Castellan''': Comes with a 48" Heavy 2D6 S8 AP-4 D2 Plasma Decimator (S9 AP-4 D3 if you Overload, but it suffers 2 mortal wound for every roll of 1 to-hit, so a way to re-roll 1s and/or access to a repair mechanic is a wise choice) and an 80" Heavy 1D3 S16 AP-5 1D6+8 dmg Volcano Lance. This is GW's answer to FW's Atrapos.  While not quite as good against other superheavies, it's a superb vehicle killer.  Fire at a Guard tankline and watch it evaporate. The QUESTOR MECHANICUS Household Tradition is the only way to get access to the Cawl's Wrath relic. An upgraded Plasma Decimator. Giving you two reasons to always have a Castellan in your army. With the stratagem of the house Taranis you can resurect it with a 4+. 
**At 625 points post september 2022.
*'''Dominus Knight Valiant''': The short range version of the Castellan, trades the powerful long range firepower for RIDICULOUSLY lethal short range guns (plus the twin meltas and same hardpoint weapons options as above). It sports the Flamer-type 18" Heavy 3D6 S7 AP-2 D2 Conflagration Cannon and the 12" Heavy 1 S16 AP-6 D10 (Yes, you read that right - and its real damage output is even higher!) Thundercoil Harpoon. The harpoon gives-you +1 to hit against {{W40kKeyword|VEHICLES}} and {{W40kKeyword|MONSTERS}}, and deals an extra 3 Mortal Wounds to the target unit if it deals any damage, making the 10 DAMAGES an ''underestimate'' of its damage.  Try and avoid firing against things with invuln saves.
**The biggest weakness of this guy is that he needs to get in close to do damage, but has the slowest movement of all Knights.  Assume you won't be able to fire the big guns for the first couple of turns, and position to break line of sight. This can't be stressed enough. If you are up against a cc army, the valiant is great, because no one wants to get close, but against a gunline, that's a lot of turns of wasted potential.
**A Hawkshroud knight valiant can provide fantastic protection for imperial allies, for 2cp it can fire it's overwatch including that auto-hitting conflagration cannon at a charging enemy unit, this is a potentially game winning strategy particularly if your opponent is caught off-guard. (No longer an option in 9th...)