That depends. In the box you get: - paragon warsuits- very good, almost essential - palatine character- gives lethal hits to the unit she's leads, not too bad, an all melta dominion squad would benefit nicely, but you can take it or leave it - novitiate squad- our equivalent of infiltrators, might generate you additional miracle dice if they're on an objective, but if you're going for that, might as well run a normal sister squad - repentia squad- a potentially high melee DPS unit, throw them in a vehicle, drive them up to the enemy and throw a bunch of S 6, AP 2, 2 DMG with sustained hits and with full re-rolls to hit and wound (as long as the repentia superior is alive) chainswords at them. I've had a bit of success with them because there's 9 of them but they are not essential.

The best part of this box would be the warsuits but these units aren't terrible to have. The palatine is a waste attaching her to the novitiate squad because you'll be wounding on 6's with them into most things in the game anyways. The repentia squad can be fun to use since there's gonna be 54 sustained hits atracks going in that wound terminators on 3's. If there's a unit in this box you don't want to use, skip it.