From WoWWiki
Description
Increases the overall effectiveness of your Succubus by increasing the efficiency of Soothing Kiss and Lesser Invisibility and decreasing the cast time of Seduction.
Ranks
| Rank | Increased Effect | Reduced Cast Time
|
| 1 | 10% | 33% (0.5)
|
| 2 | 20% | 66% (1.0)
|
| 3 | 30% | 100% (1.5)
|
Utility
The only real asset of this talent is an instant-casted Seduction, which may come very handy in certain situations like getting attacked surprisingly by a Rogue in a PvP environement or when your hunter again attacked the sheep, but besides that, it's not really worth the talent points.
Improved Succubus 
