While some powers are common across all clans, each clan has a unique single power that is unique to them. If a vampire should wish to attempt to master the discipline of another clan, they must first diablerise a member of that clan.
Learning any of the secrets of the Circle, the Sanctum, or the Ordo requires that the character be a member of those Covenants. The guard their secrets jealously, and while it is (very grudgingly, at best) accepted than in the course of a long unlife, a vampire may find their thoughts and political affiliations changing, none of the Convenants will brook former members teaching their secrets to outsiders.
The Ordo Dracul
A member of the Ordo Dracul may chose one of the below to study.