Alternatively, you might want to import some information from a database site - see Fansites for listings.
Empowered Imp
Increases the damage done by your Imp by X%, and all critical hits done by your Imp have a Y% chance to increase your spell critical hit chance for your next spell by 100%. This effect lasts 8 sec.
Critical effect chance of next spell increased by 100%.
Duration: 8 seconds
Increases the damage done by your Imp by X%, and all critical hits done by your Imp have a Y% chance to increase your spell critical hit chance for your next spell by 100%. This effect lasts 8 sec.
Empowered Imp is a talent in the Destruction tree, you will need to spend 43 points in Destruction to max it.
Patch 3.3.2 (2010-01-02): The pet bonus damage provided by this talent has been increased to 10/20/30%, up from 5/10/15%.
Patch 3.2.0 (2009-08-04): The warlock's critical hit chance is increased to 100%, up from 20% for the next spell cast after the Imp critically hits a target.