Shard of Void, Improved (Su)

Prerequisite: Shard of Void, primary mental attribute has to be 16 or higher.
Use: 1 per day per PMA Mod
Action: Standard
Target: 1 selected target per round
Duration: 1 round per 2 HD, minimum 1 round; Maximum 5 rounds (Concentration)
Saving Throw: Fortitude Half
Dispel: Yes
DC: PMA based
Spell Resistance: Yes

As Shard of Void, but instead deals 1d10 entropic damage per 2 HD(Max 5d10).