Chaos-Scarred Mantle is dropped from Chronomatic Anomaly in The Nighthold, the largest structure in the Broken Isles, and among the grandest in all of Azeroth.
1. You will get Chaos-Scarred Mantle.
2. You need to provide your account.
3. Your character's level should be 50.
4. ETA: 1-3 CDs.
Tips: The item drops on its drop rate. Drop rate increases with Seal of Broken Fate.