forest snow
Idea: an arrow crafted with a lost soul (or several) that makes the arrow able to phase through blocks and (optional part) pierce enemies.
Curio idea: the curio - not sure what it would be, maybe like a jar of ghost sauce or something - would grant an active ability for 15 seconds that makes it so whatever projectile you shoot (arrow, bullet, snowball, etc...) can go through walls and pierce enemies. This would be so funny, and with the see through glass block pranking people would be so funny lmao.
Visually, instead of a feather on the end of it, you should replace it with like the tail of a ghost kinda deal and you could even animate it to wag around or smth
keen hare