Odin most often gets blood, the only reason he didn't get blood this time was because I offered in advance when I had a whole lot spare (I give it to my prayer tree, which seems to ration it out).

I checked with Odin, but he said I had plenty and probably wouldn't need to offer blood again until the next time I actually did a rune-casting for someone else.

33 runes sounds pretty awesome. But heaps more complex! :)