Brigid's Bubble of Betterment

Healing energy radiates from your target in an aura with a 15-foot radius. Until the spell ends, the aura moves with the target, centered on them. Your target and any allies within the radius may use a reaction to regain 2d6 + your spell casting modifier hit points. This spell gains an additional 1d6 of healing for each level above fourth it is cast at.