How much extra damage to Fay and undead and Lycanthro? Mithril Fine Chain silver plated cold iron barbed hooked Net:: Has barbed hooks that are silver plated affixed into its fine mithril cords, which damage creatures caught in it. When you hit a creature with this net, it takes 2d4 piercing damage. the creature is restrained until freed. You can add your proficiency bonus if proficient with the net.
Mithril Net: A Large or smaller creature hit by a mithril net is Restrained until it is freed. A net has no effect on creatures that are formless, or creatures that are Huge or larger. A creature can use its action to make a DC 13 Strength check, freeing itself or another creature within its reach on a success. On a failed attempt the restrained creature is dealt 2d4 more damage from the barbed hooks. Dealing 10 slashing damage to the net (AC 12 ) also frees the creature without harming it, ending the effect and destroying the net. When you use an action, Bonus Action, or Reaction to Attack with a net, you can make only one Attack regardless of the number of attacks you can normally make.