Pyromancy

You could easily create mages of other elements by swapping out the Pyromancer's fire damage and fire resistance for damage and resistance of other elements. For instance, you could create a cryomancer by replacing fire with cold, or an electromancer by replacing fire with lightning. As always, ask your DM before doing so.

Heart of Fire

At 2nd level, whenever you start casting a spell of 1st level or higher that deals fire damage, fiery magic erupts from you. This eruption causes creatures of your choice that you can see within 10 feet of you to take fire damage equal to half your wizard level.

 

Fire in the Veins

At 6th level, you gain resistance to fire damage. In addition, spells you cast ignore resistance to fire damage.

 

Pyromancer's Fury

Starting at 10th level, when you are hit by a melee attack, you can use your reaction to deal fire damage to the attacker. The damage equals your wizard level, and ignores resistance to fire damage.

 

Molten Skin

As a result of training with fire and experimenting, starting at level 14 you are immune to fire. Along with this, all spells you make ignore fire immunity.