Glow of the Flame

The destruction of your foes brings light to your allies.  When you cast a spell of 1st level or higher that deals fire damage, you can choose to heal one creature of your choice withing 30 feet.  The creature regains hit points equal to 1d4

Cantrip Upgrade. The healing increases by 1d4 when you reach levels 5 (2d4), 11 (3d6), and 17 (4d4).