When the Hunger spawns, it appears at the player's location and has to run over to the enemy. A lot of the time the Hunger's spawn timer runs out before it even attacks the enemy because it spends all of its time running over to the enemy.
When the proc occurs the Hunger needs to spawn at the enemy's location (like the Daedroth from Maw of the Infernal), not at the user's location.
Set Details
(2 items) Adds 129 Weapon Damage
(3 items) Adds 688 Weapon Critical
(4 items) Adds 688 Weapon Critical
(5 items) When you deal Critical Damage, you have an [8%] chance to summon a Hunger that spews poison to all enemies in front of it, dealing [9999] Poison Damage and stunning enemies hit for 5 seconds. This effect can occur once every 5 seconds.
@Wrobel