Transubstantiation is the process by which a Character in Beyond the Veil advances in Rank and gains Attunements. To undergo Transubstantiation a character must be within their own Personal Demesne, at which point they may shift between Ranks by spending a number of Souls equal to the new Rank and a variable amount of a single type of Substance. The first time a character undergoes Transubstantiation to increase Rank above Shade they are automatically Attuned to the type of Substance used. Generaly, characters will start out with higher Rank, indicating this first Attunement has been chosen.