Actually, I noticed in ZA yesterday ... I had only 2 of my Shamans in the raid. Both with Blessing of Wisdom and Mana Spring, Water Shield and Flametongue Glyphs (one of those two is 375 inscriptions already) I just couldn't run OOM. And I tried ... I was on the LB spam like a fat kid on a cupcake. And I just could NOT run OOM. There were a total of 3 Shamans in the group, the other was our raid healer. A decked out Shaman who also had Mana Spring out. She was running low, but she was tossing heals on the entire raid, and didn't have any glyphs yet. (I fixed that after the raid)