Dragon Egg attracts Phantoms.

Finally a use for that egg. Placed in an opened area, reachable from the sky. Non-aggressive phantoms could start coming down to investigate during the night. - Feeding the phantom(s) (insert item or food) would tame it. - You could craft it a stand so they perch and stay still. Remove the stand and it will follow you till you put it on the ground. - When you have an other player's weapon, tool or armor your phantom will go on the hunt or give the player an item of your choice.