Wyrmbind

Once per long rest, on a successful attack with Wyrmthorn, a small gemstone can be pressed in on it's hilt to send Draconic lightning coursing through the target of the attack. The target will take an additional 2d6 lightning damage, and it must make a strength saving through of 15 or greater, if it fails it will be paralyzed until the end of your next turn. This effect only works as long as Wyrmbind is embedded in it's target.