Death Blow (General)

You waste no time in dealing with downed foes.

(Complete Adventurer, p. 106) 

Originally posted on D&Dtools

• Prerequisite: Improved Initiative, base attack bonus +2,
• Benefit: You can perform a coup de grace attack against a helpless defender as a standard action. Doing this still provokes attacks of opportunity as normal.
• Normal: Performing a coup de grace is a full-round action.