(One of the surviving PCs from my kickoff session is a Pyromancer. I’d posted details on the class before, but put together a one-page summary sheet for convenience. I also made one for the Cryomancer.)
The Pyromancer is a specialist wizard who masters fire through arcane studies and pacts made with forces elemental, dæmonic, or otherworldly. Pyromancers can be guild mages of an esoteric branch, or they might be members of a secret society or cult. Unlike other mages, they develop swordsmanship and wield scimitars.
The Cryomancer is a specialist wizard who masters the control of snow, ice, and arctic winds. Through arcane studies and pacts made with glacial spirits, Cyromancers form secret societies whose aims are oft deemed incongruous with other practitioners of the arcane. They favour the ice axe when ranging the frozen wastes.