you have an Astral bow the bow is a +1 to Range attack and Damage rolls and it looks like an unstrung bow when not in us
Proficiency with a Longbow allows you to add your proficiency bonus to the attack roll for any attack you make with it.
This weapon has the following mastery property. To use this property, you must have a feature that lets you use it.
Slow. If you hit a creature with this weapon and deal damage to it, you can reduce its Speed by 10 feet until the start of your next turn. If the creature is hit more than once by weapons that have this property, the Speed reduction doesn’t exceed 10 feet.
Notes: Damage: Longbow, Bonus: Ranged Attacks, requires an entire day to attune, Ammunition, Heavy, Range, Two-Handed, Slow