To you truth is relative and that's the best way truth should be, when talking with a creature not immune to being charmed you may expend a cursed energy point to force a creature you are talking to must make a WIS save against your spell save DC (they don't know they're making a save), if they fail you may make the target believe something reasonable, if you are talking to the creature for at least 10 minutes you don't need to expend a cursed energy point
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