I only do that on chaos marine lists, because ninety percent of them ARE shit that WONT work.
As for you, why not try black templar, we can spam just as well for cheaper, and we get to ignore the lance rule which is what usually breaks LR is you're fighting nids/eldar/dark eldar.
One second and I'll show you why he wins tournaments.
This shit. Right here. A retarded, handless chimpanzee could win tournaments using the single best minmax of lasplas cheap transport with a librarian.
Honestly if you want to break tournaments, get the same shit but put a melta in each squad, give the libbies(two of them) both the blood lance and the 5+ cover save horsecrap. Then MAXIMIZE RAZORBACK OLOLOLOL.
Then just get three baal preds with shitstorm cannons and done. You now have won warhammer 40k.