Golden Harp

The Golden Harp would be an item you craft by arranging gold bars and a special type of silk in a certain way on a crafting table, similar to a bow. This item could temporarily pacify monsters, and if used near a Zombie Pigman in the Nether, would cause it to be healed, grow wings, and "ascend" out of the Nether, dropping XP and their sword on their way out.

This would probably work best as a rare item, and it'd be a nice pacifist solution to mining quartz without having the pigmen mad at you. You could send enough pigmen up to get on the collective's good graces.