Curse of Strahd
Biomancy is a magical discipline known to mages who specialize in the use of manipulating biological energy and processes; in short – the essence and crafting of life itself. Practitioners are of Biomancy are known as Biomancers. Biomancers command biological systems by force of will. If necromancy is the study of death magic (either for good or evil) then biomancy is the study of magic to use the study of life essence (also either used for evil or good).