Mythic Peacemaker Feat

My idea is to make mythic, sooner or later, all the P1 feats that still are not.
So today here’s another!
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Peacemaker (Mythic)

Your force of persuasion and pacification is irresistible.

Prerequisites: Peacemaker.

Benefits: Your bonus on DC from the Peacemaker feat doubles, and you add all the spells affected by the feat to your spell list.