Cassia Build: Rogue Trader

Master the Cassia Officer build in Warhammer 40,000: Rogue Trader. Enhance her Fellowship, control spells, and buff allies for ultimate battlefield dominance. Full guide inside.

The main idea of the Officer Build is that you’re taking the very basics of the officer’s stat bonuses and bonus 2AP turns, and then taking mainly Navigator benefits. The reason is because of an Unnatural Allure, which grants bonus Fellowship per each Navigator trait you take. This then further enhances your Voice of Command, granting incredibly strong bonuses to your characters.

It does mean that you are going to start playing Cassia as a mage type character, casting powerful control spells across the battlefield. These spells typically come in the form of forcing enemies to move. This is important since you are likely going to have at least one or two melee characters in your party for Attacks of Opportunity synergy that comes with this playstyle. If you have Pasqal with his Omnnisiah’s Axe, that’s a static cleave that comes from the power weapon, which is free damage in perfect usage of the skill.

The other benefit of the playstyle is you want to force enemies around the battlefield, especially when you encounter some very hard enemies with lots of movement. This can buy a lot of time on harder difficulties. In addition, one of the talents you take grants you damage to enemies that you forcefully move around the map, which is passive damage since Officers tend to not do too much damage thanks to low weapon or ballistic skill.

Officer Build

Grand Strategist

Cassia is a powerful character at this point, with some incredible control magic. You now want to add more zones and powers to ensure you dominate every battle map.

The Grand Strategist section will further embellish your magic capabilities and grant more and more buffs you need for your magic damage, survivability, and take some key stratagems to benefit your frontline. From our experience, your backline hardly needs to dodge and overpen if you’ve been modifying your gear and builds properly, whereas reduced dodge, damage bonuses and more are certainly helpful for taking out bosses, or regular mobs on much harder difficulty. Other than that, you’re buffing your magic, and you are making it more likely for your allies to pass any potential friendly fire magic tests you may unleash. Mobility Zone is a handy talent for assisting an assassin in your party and helping to get to those weakspots and Vuln pops for even more damage.

Furthermore, there’s some great breakpoints at certain stages of this build. Take the lineup of Under My Protection. You can take this here as you’ll have 10/2 in the formula because of the Fellowship tick-over through Nav Power bonuses from Unnatural Allure. This is where you can start really seeing the benefits of the Officer and Grand Strategist Fellowship scaling, thanks to that one talent investment and further Nav power investment through the Officer and Grand Strategist tree up to that point. This only gets better the more talents you take in Exemplar and Grand Strategist too.

Exemplar Build

The Exemplar tree comes with some very strong buffs you can grab to support your overarching playstyle. There are a few good ones to buff willpower tests, magic damage, and other supportive aspects of the playstyle. Below you’ll find a quick overview of an order we recommend grabbing, with freedom to do what you want after that. Malign is a key one, as it will enable every successful Willpower test to deal more damage, which you’re using on your main Navigator spells. Overall, this one talent immediately makes her more deadly, ready for those high Wound threats.

At this stage, you’re largely picking up what other minor benefits you can give to your stratagems, any other stratagems you’re interested in, or other small Navigator magic bonuses you can find. When you come across Exemplar talent rows, you’re either looking to buff your supporting capabilities or defensive capabilities, depending on what you feel you need for the build at the time, and the difficulty you’re on. With that said, we’ve concluded the Cassia build in Rogue Trader, so you now know how to build your warp mage, combined with some very powerful combat buffs, dodge support, and other important facets that will see you through hard mode and beyond.