College of Infiltration

Bards of The College of Infiltration are masters of deception, they are able to copy someone with excruciating detail, to the point where even their mothers wouldn't see the difference. They are used as undercover agents of different organizations or sell their skills to the highest bidder.

Bonus Proficiencies

When you join the College of Infiltration at 3rd level, you gain proficiency with thieve’s tools and can use them as a spellcasting focus. 

Copycat

Starting at 3th level, you gain the ability to observe or interact with a humanoid for 1 minute. After that you can use an action to magically take on the look (if you saw the humanoid during observing) and voice (if you heard it speak during observing) of the observed humanoid for a number of hours equal to your bard level. You can drop the disguise as a bonus action. 

The observation stays in your mind for 24 hours, after which you can not change into the humanoid again unless you observe it again. If you choose to observe another humanoid the previous observation disappears. 

You can use the ability to disguise yourself in an observed humanoid one’s per long rest.

Another creature can see through your disguise by succeeding on a Wisdom (Insight) check contested by your Charisma (Deception) check. You gain a +5 bonus to this check.

Quick Thinking

At 3th level, you learn that in undercover work you need to be able to adapt quickly. If you are targeted by an attack or have to make a saving throw, you can use your reaction to expend one of your uses of bardic inspiration, rolling the bardic inspiration die and use half of the number rolled rounded up as a bonus or penalty to the roll. You can do so after the roll and after the result of the roll is known.

Copycat Master

At 6th level, you mastered the art of crawling in someone's skin. You can keep a list of a number of observed humanoids equal to your proficiency bonus. The observed humanoids on your list stay there forever or until you replace them with another one.

When you change into a humanoid on your list, you gain access to all information that the humanoid would freely share with a casual acquaintance. Such information includes general details on their background and personal life, but doesn’t include secrets. The information is enough that you can pass yourself off as the person. You have only access to that information when you are in your disguise.

Your disguise can't be seen through without magical means.

Unbreakable Mind

Starting at 14th level, nobody can determine if you are lying and your thoughts can’t be read by telepathy or other means, unless you allow it.