1. Complete Layer 4 of The Jailer's Gauntlet in Torghast, Tower of the Damned.
2. You will get Lightless Tormentor, Dominated Hearthstone, Title: Gauntlet Runner, Mount: Colossal Ebonclaw Mawrat.
3. You need to provide your account.
4. You need to unlock the The Jailer's Gauntlet.
5. Your character's item level should be 250+.
6. ETA: 1-3 Days.