MA Ulm using Blood Magic

[Belac]

To follow up on this with another angle...

I've designed an Ulmish rainbow pretender which has 26 points left over. My choices are to take a negative scale and use the 66 points for something or to take Blood2. Would this be worth it just for random searches and a possible side strategy? OTOH, since 25 of those points come from the cheaper cost of the Great Sage in the CBM, and now blood stones are apparently unique items, does that sufficiently weaken the strategy?

EDIT: Another pretty unrelated question, but it's about Ulm so I will ask it here: Ulmish troops are cheap. Is it a viable strategy to go Turmoil/Luck, or just Turmoil and use the points for other things?