If you already got through mistlands you probably don't need what Bonemass gives you. It would have been really handy in the plains and in mistlands though. And it will likely be useful in later biomes too. New players think I'm talking about one thing but experienced folks know that I'm talking about the other thing.

If you already got through mistlands, apparently you did fine without what you get from Yagluth. Probably would have made things a lot easier, but I guess you did fine without it. You have missed out on one of the toys that people enjoy though.