Glibness

Your whispers become flawless. For the duration, when you make a Deception, Persuasion, Performance, or Intimidation check using speech, treat a d20 roll of 14 or lower as a 15. Powers that determine whether you are telling the truth read your statements as truthful unless Tier 8 or higher.

This power has its own stable page so it can be linked from any character, item, location, story post, bargain, curse, or future reward.