You gain the ability to turn death into magical flames that can heal or incinerate. When a Small or larger creature dies within 30 feet of you or your wildfire spirit, a harmless spectral flame springs forth in the dead creature’s space and flickers there for 1 minute. When a creature you can see enters that space, you can use your reaction to extinguish the spectral flame there and either heal the creature or deal fire damage to it. The healing or damage equals 2d10 + your Wisdom modifier.
You can use this reaction a number of times equal to your proficiency bonus, and you regain all expended uses when you finish a long rest.