Manuscript page: Killer Whale is an alchemy formula in The Witcher 3: Wild Hunt that is needed to craft Killer Whale.
It's a possible spawn at a random diagram location or purchased from the following merchants:
- Otto Bamber at the Herbalist's Hut northeast of Oxenfurt
- Yolar at Gedyneith
- All alchemists and herbalists in Toussaint, except Pinastri
