Brass Dragon Knuckles

Your knuckles become imbued with the breath of a brass dragon. As part of this action you strike at a creature and attempt to cause one of the below effects. You may use your action to attack like this once per turn until the spell ends.

Fire Knuckle: The target makes a Dexterity saving throw, taking 6d6 fire damage on a failed save, half as much damage on a successful one.

Sleep Knuckle: The target makes a Constitution saving throw fall unconscious for one minute. This effect ends for a creature if the creature takes damage or someone uses an action to wake it.