1 infusion point, automaton
The Animated Chain is a medium construct, has hit points equal to 4 * your level HP, an AC of 10 + your Intelligence modifier + your proficiency bonus, and a walking speed of 30 feet. The Animated Chain has 10 in all ability scores.
Action: The Animated Chain makes a melee attack roll against a creature within 5 feet. On a hit, the attack deals 1d6 bludgeoning damage, and the target is grappled and restrained. The Animated Chains can grapple a creature of any size. The escape DC of the grapple is your infusion saving throw DC.
If you spend 2 extra infusion points, you may add a set of manacles. Creatures grappled by the Animated Chains have disadvantage on ability checks made to escape.