Ghost Chicken + Ghost Feathers

A spectral chicken that rarely appears on dark nights. It will run away from the player if it detects you, but if you can catch it with a melee attack within 6 seconds of initiating the chase, it will disappear and offer you 5 Ghost Feathers. Right clicking while holding a Ghost Feather gives you invisibility and run speed for 2 seconds, consuming the Ghost Feather. They're good for getting out of a sticky situation!

You can also use one stick and one Ghost Feather to craft 4 Ghost Arrows, which pass through blocks. These arrows can be enchanted or tipped just like regular Arrows.

The Ghost Chicken will detect you if you are in its line of sight, or if you make loud movements. Your best bet is to Sneak up behind it or corner it - it runs faster than you! I think the Ghost Chicken would provide an interesting new challenge for players, and its feathers can offer unique utility.