Essence of the End is one of the Void Knight Passives which is unlocked at level 35. Requires Sentinel level 20 and masteries unlocked.
Description
You have a 4% chance per allocated point to gain a void essence on kill. Void essensces last 7 seconds and grant 15% increased void damage, 15% increased melee damage, and 10% reduced duration of stuns. You can have a maximum of 3 void essences at once.