Zealot
1-4 Bleed Stacks on non-Weak Spot Hits.
12-24% Rending on Enemy Weak Spot Hit for 3.5s. Stacks 5 times.
Target receives 1-4 Stacks of 2.5% Brittleness on direct projectile hit. Debuff lasts for 5 seconds and can have a maximum of 16 stacks.
Ranged hits add 1-4 stacks of bleed to enemies.
Contrary to what you see most zealots do in havoc games, Book Zealot can indeed get stuck in and actually kill things. Novel concept I know.
30% damage buff, 10% crit aura, and brittleness marking armored mobs and bosses with bleed is a lot of damage for the team and yourself. Uncanny affects DoTs, a lot of your damage comes from the bleed. Missing a talent like sustained assault isn't as bad as it would be on other weapons.
I pref Bolter over flamer for special sniping and because Psyker flame staff is usually enough anyway, has better ammo economy, and isn't reliant on Annoint in Blood as much for damage output.
10% crit aura node is good don't listen to people. 3/4 of the classes benefit from crit to an enormous extent and will help the team even if you don't directly notice the impact.
With the new havoc changes book is even more mandatory than before unfortunately. But if you go charge/stealth anyway you are unfathomably based.
Also fuck blight spreads
