To make:
imbound the arrow with one diamond worth at least 500g let Dodonna use an action to apply its magic to the arrow befor fireing. Dodonna can use this spell twice a day (long rest).

The spell transports the target into a tiny demiplane that is warded against teleportation and planar travel. The demiplane can be a labyrinth, a cage, a tower, or any similar confined structure or area of your choice. This spell last for 1 minute, and requires consentration from the ranger.