Ender Pearl

The Ender Pearl is an item in the 1.8 update,made by Spencer, and it is found in the 1.8 pre-release.

The Ender Pearl is sometimes dropped by Endermen upon death. It decreases the threat level of Endermen by half when in the Players inventory..

Specially, When a player holds at least one of this item in their active inventory; enderman can no longer initiate an attack against a player who stares into its eyes. The only way from point for the enderman to attack the player is if the player initiates an attack against it.

Basically, if you attack the enderman it will then become hostile like any normal mob.

Gallery
Ender Perle Perle d'ender Редкий жемчуг