Bitter Chains

The spiked ring in your hand expands into a long, barbed
chain to ensnare a creature you touch. Make a melee spell
attack against the target. On a hit, the target is bound in
metal chains for the duration. While bound, the target
can move only at half speed and has disadvantage on
attack rolls, saving throws, and Dexterity checks. If it
moves more than 5 feet during a turn, it takes 3d6 piercing
damage from the barbs.
The creature can escape from the chains by using an
action and making a successful Strength or Dexterity
check against your spell save DC, or if the chains are
destroyed. The chains have AC 18 and 20 hit points.