Satchel of Savage Mysteries

Satchel of Savage Mysteries was rewarded for completing a Mists of Pandaria raid instance on LFR difficulty while Call to Arms was active for a given role.

In Warlords of Draenor, the source was changed to completing a level 100 heroic dungeon through LFD. It was later replaced with Savage Satchel of Cooperation in patch 6.1.0.

Contains
In addition to the following below, there would be a very low chance of looting a pet, a mount, or a random Flawless Battle-Stone for a particular pet family.

The satchel also would contain an item level 630 armor, ring, weapon, or trinket from a level 100 Heroic dungeon. They are not listed here in order to keep the list concise.

Developer commentary
This comment was posted alongside the hotfix: