The special affix appears to have a 6-8 seconds cooldown (enemies are slowed for 3-5), but it pulls all enemies within 60 yards to the target, only ignoring those immune to Knockback. This amulet is especially powerful when combined with Strongarm Bracers.
Stats (Level 31)Edit
The Ess of Johan
"A variation on the retreat and ambush stratagem uses the Ess of Johan most effectively. First, send out a small group of soldiers to confront the enemy and create the appearance of being overwhelmed. When they retreat, the enemy will follow to finish them off. Just as the pursuing force realizes it's been led into a trap, employ the artifact to deny its escape." —Rakkis's Strategies of War