Black Dragon's Mantle (Tanares)

You infuse the body of a willing creature you touch with black flames that cover its entire body. Target creature is resistant to fire and necrotic damage. Any other creature that touches the target creature takes 1d6 fire damage + 1d6 necrotic damage. If the target creature takes damage from melee attacks, for each attack made, the attacking creature must make a successful Dexterity saving throw or take damage as if it had touched the target creature. In addition, melee attacks made by the target creature also deal touch damage as a bonus to your damage.