It should be noted that this is not free for Terminators/Paladins, but for a single point increase it is still the best choice, the force sword could be better only againts T3, high save units (, With Elites and Commander this weapon is a really good choice: there are combinations of Tactics (. Expect the Clowns to take full advantage of their mobility and the existence of difficult/dangerous terrain in kill team.
Charge first, try to get the mortal wound bonus, and watch the enemy suddenly lose their commander in one go. Killing Strikes can make her extra lethal, especially if she gets many wounds in. They can definitely deal with the enemy, but the point here is that you have to actually think in order to do it. Maybe when the full Sisters release comes out in 2020. Plus you're faster than them so they can't run away, and you can cast catalyst on yourself for a 5+++. It's a heavy weapon that can't fire after moving, even with the Heavy speciality. Effectively a Psychic Cloud of Flies. The head could come from a cybernetica datasmith, the arm could be given an auspex, the pistol could be a fancy gun from WHFB and given some sci-fi detail (like attaching the gun to the backpack through a cable). You can always look for the actual model from the Rogue Trader box, but GW has released a decent amount of dog models over the years. Against the bigger MEQs Rangers and Vanguards are mostly irrelevant - even taking account your superior numbers and number of shots, you might as well be firing paper darts against those high saves, don't even bother. Any character with 3 wounds or less will be at risk of dying to this guy early on, and even 4 wound characters are at risk of that extra mortal wound. Very limited Relic selections – Deathwatch don’t have the ability to master-craft weapons and only have a sin… Heavy Bolter is your best ranged option, though as a Heavy 3 gun, it tends to limit the mobility of the user. Due to ignoring the penalties of the first flesh wound, anything less than a confirmed kill is meaningless, as by the time a second flesh wound is inflicted, it's fairly likely that the enemy will be closing to use their 2d6 autohitting mode. The most frequent psykers in KT are Thousand Sons' Rubrics, and they are not going to reliably fall for a S4 AP0 gun. Deathwatch Kill Teams gained the Mission Tactics rule in Kill Team: Elites, which allows you to choose a datasheet in your opponent’s list, and then re-roll 1s to wound against all models on that datasheet, including gunners, fighters, and other such units. The Deathwatch Frag Cannon is still the best option against SoB, it will wreck havoc in their lines. Exclusive to the Librarian in Phobos Armor. If you want these options, get to converting.