Scorchbringer

The Scorchbringer spouts a stream of flame in a
line that is 30 feet long and 5 feet wide.
Each creature in the line must make a DC 12 Dexterity saving throw, taking (2d6) fire damage
on a failed save, or half as much damage on a successful one.
Every short rest the holder may lose (1d4) points
of HP to recharge one use up to a max of 2 per
long rest.
If you heal using Hit Dice you must take the
damage after you've done so.