"The Peacemaker" is a prophecy that Sandwich wrote. It was Nerissa's favourite prophecy, and she found comfort in it, often staying near the corner where it was written. It is believed to be referring to Ripred.
On soft feet, by none detected,
Dealing death, by most rejected,
Killed by claw, since resurrected,
Marked by X, two lines connected.
Finally, they intersected,
Two lines met, one unexpected.
This prophecy is referring to Ripred and the two scars running across his face. The unexpected scar is one that he inflicted himself in order to gain the title and respect of Peacemaker. The other is a battle scar given by Solovet the human.