I had a mad rush on to get the last model painted up for my Sister of Battle army for a small Freebootaz tournament which took place at Warhammer World in early February.
The final model to paint was Uriah Jacobus:
The tournament I used my Sisters in was a 1000 points per player doubles tournie (Saturday was singles when I played Chaos). My list was:
HQ:
Uriah Jacobus, 9 Death Cult Assassins (225)
Troops:
Battle Sister Squad, 1 Melta Gun, 1 Heavy Flamer, Rhino (190)
Battle Sister Squad, 1 Melta Gun, 1 Storm Bolter, Rhino (173)
Fast Attack:
7 Seraphim, twin inferno pistols (140)
Heavy Support:
Exorcist with searchlight (136)
Exorcist with searchlight (136)
I had been due to team up with an IG army, but my partner was ill and couldn't make it down. Fortunately, someone else stepped up and I teamed with his Grey Knights which proved to be a pretty good combination (since we won!).
Uriah Jacobus was awesome as a force multiplier, for several reasons.
Firstly, he gives you a re-roll of your dice to generate Faith Points each turn. At 1000 points, I didn't find this particularly essential as I rarely used more than one or two points per turn, but since the Faith mechanic doesn't really scale that well, in larger games I can see the re-roll being important.
Secondly, he carries the Banner of Sanctity. This gives his unit +1A and Feel No Pain. Combined with Death Cult Assassins this is brutal. FnP is handy since they only have a 5+ save (and assuming you can make FnP rolls which I never can), but +1A is also pretty nasty.
Thirdly, he has the Righteous Rage special rule. This is identical to a Space Marine Chaplain's Liturgies of Battle rule, so it gives re-rolls to hit on the charge.
Fourthly, he's Stubborn and Ld10. Being an IC he confers this on any unit he joins.
The unit I ran above (Jacobus and DCA) had 45 I6, WS5, S4 power weapon attacks on the charge, with re-rolls to hit. Against a 5 man GK terminator squad, this ended up causing 27 wounds with no armour saves. Next game, they carved through a SM tactical squad like they weren't even there. The weakness of this unit is that if you can be out Initiatived (like assaulting into cover) you are going to get hurt as DCA are not that survivable. You're also vulnerable to getting left in the open after an assault and then being shot to pieces.