Mastering magic

You have learned to manage your magic well with out over exhausting yourself. 

Whenever you cast either a cantrip spell or higher level spell as an action, you can use your bonus action to cast a Cantrip with a casting time of Action or Bonus Action at it's 1st level only.

-You must be level 8 or higher to use this feat.

-You can take this feat twice once you hit level 18, doing so will allow you to cast a cantrip with increased damage. You can now cast the cantrip as it was being cast at 11th level.