Gift of Aureate Transmutation

You've been blessed by the radiant fires of Amatsumagatsuchi:

• You learn the Metamagic option Aureate Transmuted Spell. This Metamagic option cannot be replaced when you receive an Ability Score Improvement feature.

• Aureate Transmuted Spell
  When you cast a spell that deals a type of damage from the following list, you can spend 1 sorcery point to change that damage type to one of the other listed types:  fire, lightning, radiant.