Cult of Mithras
In Fifth Edition, the Cult of Mithras was partly resurrected by a lineage within House Flambeau (see HoHS 17-18). The god, and tradition, is presented as associated with brilliance and light (Ignem), harmony, and personal excellence.
The influence of Mithras is also apparent in the Legion of Mithras.
References
- The cult of Sol Invictus is a Divine cult that is somewhat related, at least thematically, to Mithras.