TikTok addiction

You throw a piece of iron at the target and they make a dc 13 wisdom saving throw. On a success nothing happens, and on a fail they instantly become obsessed with the price of iron. They will not look away from the piece of iron and won’t move for the duration of the spell. If the target is hostile towards you, that will only attack you if they become bloody or if the piece of iron is taken away. If the iron is taken away, they will keep attacking the person who has the iron until they either get it back, die or the spell ends