With the help of Pathaleon the Calculator in Heroic Mechanar, I’ve finally reached 500 Agility! [Handguards of the Steady] dropped during a random run when I was replacing a dps slot. It replaced my [Beast Lord Handguards]. Fortunately, I still have two pieces of the Beast Lord Armor to keep the trap cooldown bonus.
Looking forward to 100 more badges for [Crossbow of Relentless Strikes].