Improved Animate Dead is a Cleric skill that extends the duration of the skeleton summoned by Animate Dead. It can be upgraded 4 times.
1/4 : Extend summoned skeleton duration by 3 seconds.
2/4 : Extend summoned skeleton duration by 4 seconds.
3/4 : Extend summoned skeleton duration by 5 seconds.
4/4 : Extend summoned skeleton duration by 6 seconds.