Foundry is an ability exclusive to Pokémon Zeta and Omicron. It is the signature ability of Mega Steelix.
Rock-type moves, when used, melt and become Fire Type [sic]
Furthermore, Foundry also causes Stealth Rock to become a Fire-type entry hazard as well as allowing it to stack with the Rock-type version of itself.
Pokémon with FoundryEdit