A savant is an Allomancer who has flared their metal for so long that it has changed their physiology.
With most metals the effects are quite small, Seekers for example often become savants without being aware of it, this grants them a boost to the range of their abilities. However some metals warp the body of savants much more. Tin savants for example experience such magnification of their senses that they can become incapacitated by bright light or loud sounds. Pewter Mistings often die before becoming savantsCite error: Invalid <ref> tag; refs with no name must have content as they feel neither pain nor exhaustion to any great extent and so may ignore wounds which later prove fatal.