Elemental Adept

Prerequisite: 4th+ Level, Spellcasting Feature
Repeatable: Yes, but you must choose a different Damage Type each time for Energy Mastery

In your spellcasting, you can harness a particular form of energy with deadly mastery, granting you the following benefits:

Ability Score Increase. Increase your Intelligence, Wisdom, or Charisma score by 1, to a maximum of 20.

Energy Mastery. Choose one of the following Damage Types: Acid, Cold, Fire, Lightning, or Thunder. Spells you cast ignore Resistance to damage of the chosen type. In addition, when you roll damage for a spell you cast that deals damage of that type, you can treat any 1 on a damage die as a 2.