The Ogham Discipline is only found among the Lhiannan bloodline; they do not (some say cannot) share its secrets with those who do not suffer from their line’s curse. All Lhiannan share a splinter of a dark, oncevast, and powerful forest spirit. Ogham allows them to tap into that spirit’s power, and into its communion with free spirits of its ilk.

Ogham is a limited form of blood magic; it is neither as flexible nor as powerful as Tremere Thaumaturgy, nor other Clans’ blood sorcery, but within the bounds set by the Lhiannan’s territorial nature it is quite powerful. Ogham is strongest within a Lhiannan’s home territory. More than 50 miles (80 km) from her home territory, the difficulty of using Ogham increases by one across the board, as the Lhiannan’s own spirit-shard comes into conflict with unfamiliar local spirit life.