"You're right." Medrau's hand fell heavily on Mabry's shoulder, and within a split-second her knife's blade rested cold along the healer's throat.

"Us and the end of the world. Just like old times..." She moved suddenly, bringing the knife down to drive it into Mabry's chest.
She aimed for a lung.
The injury wouldn't kill immediately, but it would cause enough pain and difficulty breathing to prevent the use of any inconvenient magic. She would have preferred a nice, dramatic speech, but it would have been rather embarrassing to end up under a Stop spell half-way through. The gloating would just have to wait, she supposed.

Letting Mabry fall, she stepped back and snatched up the black stone which had waited in the temple for so very long. Her mistress would be proud.