You'll Die When I Tell You to Die!

Command
Cost: 
Your remaining command points
Action: 
Interrupt
Target: 
One nearby ally about to roll a death save (on the ally's turn)
Effect: 

The target gains a +2 bonus to the death save for each command point spent on this command.

Epic Feat: 

If the target succeeds on its death save, it can take its turn normally as if it rolled a natural 20.