- Since patch 7.0.3, it was possible to obtain this item simply by talking to Amisi in the Northrend Dalaran. This was probably due to a failure to differentiate the Amisi from her version of the Dalaran located in the Broken Isles. It was corrected afterwards in an undocumented hotfix.
- Patch 9.0.1 (2020-10-13): Item level and level requirement modified due to level squish.
- Patch 7.1.0 (2016-10-25): Can now be used while in combat.
- Patch 7.0.3 (2016-07-19): Added.