(Hena @ Jan. 23 2007,19:10)
QUOTE
The point is that unless you are silly you have 2 Hierodules/Trygons with it. Then since you can assign the damages, those two surprisingly gets killed first. Since with 2d3+2 (and spore or >30cm, you get 3d3+2 which one would of course do) you will ensure that one or possibly both (with >30cm and spore) get to return back. No army has enough TK to penetrate that shield.
And that *really* slows down the Dominatrix, especially if you try to keep the bodyguards in "front"... you actually need three Hierodules/Trygons for an adequate shield, so that's a quarter of your army (at 3000 points) in one big war engine formation.
The enemy doesn't just need TK to deal with it, they just need to put a lot of AT fire on the formation, almost like stripping shields against a Gargant/Titan; once one is dead, then they can move to fire directly on the Dom.
And I think Hierodules/Trygons should be increased in points, so that would make the practice even more costly.