You've honed your ability to mimic voices, accents, and even specific people to an extraordinary degree, making you a master of disguise and deception. You gain the following benefits:

• You gain proficiency in the Deception skill if you don’t already have it. If you are already proficient, you can add double your proficiency bonus to checks made with this skill when attempting to mimic someone's voice or mannerisms.
• As an action, you can attempt to mimic the voice and speech patterns of a creature that you have heard speak for at least one minute. A successful Insight check contested by your Deception check reveals that the voice is mimicked. You must complete a short rest before using this ability again.
• You can spend 10 minutes observing a creature to mimic its body language, gaining advantage on Deception and Performance checks when pretending to be that creature.

This feat allows characters who specialize in deceit or infiltration to further hone their skills, making it difficult for enemies to discern their true identities or intentions. It offers both in-combat and out-of-combat utility, making it useful in a variety of scenarios.