School of Elementalism

Where most mages specialize in one of the 8 schools of magic, through your studies you've learned to see the practice of magic differently. The magic you practice is divided by the elements of the Inner Planes. Through this study, you have mastered the energy of Air, Water, Earth, or Fire, becoming nothing short of an artist in the manipulation of this elemental power. Elementalists are sometimes secluded researchers, but more often they're adventurous types who sign on with groups that can appreciate their singular talents. 

Elemental Savant

Beginning when you select this school at 2nd level, the gold and time you must spend to copy a spell associated with your chosen element into your spellbook is halved. In addition, you can speak, read, and write the language of your chosen element.

Air

Through the study of elemental air, you have learned the secrets of lightning or thunder (your choice) damage, and you are fluent in the Auran language.

Earth

Through the study of elemental earth, you have learned the secrets of acid damage, and you are fluent in the Terran language.

Fire

Through the study of elemental fire, you have learned the secrets of fire damage, and you are fluent in the Ignan language.

Water

Through the study of elemental water, you have learned the secrets of cold damage, and you are fluent in the Aquan language.

Elemental Mastery

Starting at 2nd level, you gain resistance in your chosen element's associated damage. In addition, every time you deal your element's damage, you add you Intelligence modifier to the damage.

Acid Mastery

Through your mastery of elemental earth, you are resistant to acid damage and add your Intelligence modifier to the damage of any spell that deals acid damage.

Cold Mastery

Through your mastery of elemental water, you are resistant to cold damage and add your Intelligence modifier to the damage of any spell that deals cold damage.

Fire Mastery

Through your mastery of elemental fire, you are resistant to fire damage and add your Intelligence modifier to the damage of any spell that deals fire damage.

Lightning Mastery

Through your mastery of elemental air, you are resistant to lightning damage and add your Intelligence modifier to the damage of any spell that deals lightning damage.

Thunder Mastery

Through your mastery of elemental air, you are resistant to thunder damage and add your Intelligence modifier to the damage of any spell that deals thunder damage.

Substitute Elements

Starting at 6th level, you can funnel elemental essence through your damage-dealing spells. When you cast a spell of that deals damage, you can change the damage to the type associated with your focus element. You can use this feature a number of times equal to your Intelligence modifier (minimum of once) per long rest.

Absorb Elements

Beginning at 10th level, when you would take damage of the type associated with your focus element, you can use a reaction to take no damage and regain a number of hit points equal to half the damage you would have taken. The health regained is unaffected by your resistance or immunity to the damage. You can use this feature a number of times equal to your Intelligence modifier (minimum of once). You regain all expended uses when you finish a long rest.

Irresistible Strike

Starting at 14th level, your elemental damage spells can become unstoppable. Your spells that deal damage of the type associated with your focus element can ignore immunity or resistance to that type of damage. You can use this feature a number of times equal to your intelligence modifier (minimum of once). You regain all expended uses when you finish a long rest.