Extra Death Pact (3.5e Feat)
From D&D Wiki
 Extra Death Pact [Dark, Epic]
You have learned to harness the power of darkness to stave of death additional times per day.
Prerequisite: Darkness Class Feature, Death Pact Class Feature, Lasting Death Pact feat
Benefit: The death pact ability one additional time per day.
Normal: The death pact ability can only be used one time per day.
Special: You may take this feat multiple times, its effects stack.