Arrowhead of Fey Tracking

This arrowhead is designed to track fey creatures. once per long rest, you can activate the arrowhead. while activated, you can detect any fey creature within 300ft of you for up to 10 minutes the arrowhead does not give you the creatures exact location

Additionally, while attuned to this arrowhead, when you hit a creature with a ranged attack from a bow, you can choose one of the following effects: 1) the target is either enlarged or reduced as per the enlarge/reduce spell or 2) the target is entangled as per the entangled spell. The DC for both is your spell save DC. You can use the arrowhead in this way a number of times equal to your proficiency bonus per long rest.