Phoenix Feather

This brilliant orange and red feather is hot to the touch, but doesn't burn. 

When a character dies with this feather in their inventory, the feather ignites, burning so intense as to scare even death away. 

All hostile characters within 5 feet of the character must make a Dexterity Saving Throw (DC12). On a failed save, creatures take 16(4d8) fire damage, or half as much on a successful save.

After 1 round of burning, at the end of the players turn, they are reborn with full health, full hit die, all of their spell slots, and any other things I forgot to mention.

The feather burns so intense that nothing is left, not even ash.