Wondrous Item

Rare Requires Attunement

While attuned, you have resistance to fire damage.
  Incubating Power. When you cast a spell that deals fire damage, you can use a bonus action to place a small ember at a point you can see within 30 feet. The ember lasts for 1 minute. If an enemy ends their turn within 5 feet of an ember, it explodes for 2d6 fire damage (Dexterity save using your spell save DC for half). You can have up to 3 embers active at once.
  Mother's Fury. Once per day, when you are reduced to half your hit points or less, you can use your reaction to immediately cast burning hands at 3rd level without using a spell slot.

Cost: 2000gp