Manuscript page: Superior Black Blood is an alchemy formula in The Witcher 3: Wild Hunt that is needed to craft Superior Black Blood.
It's a possible spawn at a random diagram location starting at level 15, or purchased from the following merchants:
- Gremist at Gedyneith
- Yolar at Gedyneith
- All alchemists and herbalists in Toussaint, except Pinastri
