Devouts Rebirth

You have grown closer to your divine god, and through your devotion he has granted you access to new strengths.

Once per long rest if you fall in battle you can expend a spell slot of level 2 or higher to rise back up in a glory of flame. Roll a 1d10 per level expended and regain that much health while also dealing that much to nearby non-holy enemies within 1 square per spell slot used.