Cube of Malice(Heroic,Itemlevel 174) is dropped from Il'gynoth in The Emerald Nightmare, which is a corrupted portion of The Emerald Dream Coming in Legion.
1. You will get Cube of Malice(Heroic,Itemlevel 174).
2. You need to provide your account.
3. Your character's level should be 110+.
4. ETA: 1-3 CDs.
Tips: The item drops on its drop rate. Drop rate increases with Seal of Broken Fate.