Wrought Iron Sole*

When cast, the target must make a Str saving throw. On a failed save, the target's feet feel as if they are weighed down by iron, slowing their movement speed by 5 feet. Every subsequent round, the caster can use their bonus action to make an Int. check contested by the target's Str check in order to reduce the target's speed by an additional 10 feet. Melee weapon attacks made by the target have disadvantage when slowed in this manner.