Tales of the Valiant Players Guide (pg. 114)
Fireforge heritage characters were raised with the values and traditions of crafting communities dependent on the resources found in fiery—and often inhospitable—locales.
Because fireforge communities are built around sources of extreme heat, they often encounter and make relationships with Elemental creatures drawn to these same environments. Fireforge communities and elementals commonly form alliances when threatened by giants, dragons, and other volcano or mountain-dwelling creatures who compete for territory
Forgecraft
You gain proficiency with Smithing tools (see Tools in Chapter 5). Double your PB for any ability check you make that uses them. In addition, you know the mending cantrip.
Heat Resilience
Lifelong exposure has made you resilient to the effects of severe heat. You are resistant to fire damage.
Languages
You know Common and one additional language of your choice.