Silver Tongue

As a rogue of the silver tongue archetype lying so easy for you that you can convince anyone of anything, and your ability to gently coerce and influence the actions of both the noble and the savage as long as they are foolish enough. You are an expert in deceit and persuasion, and your damn proud of that fact. New students to this archetype often fibbed as a child, a little white lie there, a little imaginary monster in the wolves, or perhaps they were charismatic and had many friends, and chose to use that to their advantage.

A charismatic enough silver tongue can often find themselves at the top of whatever business they venture into, regardless of whether or not they have any knowledge on anything relevant for that position. A silver tongue may be the sweet-talker of a thieve's guild, convincing the guards to let their oh so innocent friends go, or perhaps a travelling rogue, travelling from town and conning morons along the way.

Stinging Tongue

3rd-level Silver Tongue feature

You know just how to lace your words with the right amount of poison to hurt. You may as an action cast vicious mockery, using your tongue as a spellcasting feature. The DC for the spell is 8 + your proficency bonus + your charisma modifier. You may do this a number of times equal to your charisma modifier per long rest.

Fake It Til You Make It

3rd-level Silver Tongue feature

Your good enough at lying that you can even lie your way through tests of skill. Whenever you have to make a skill check with a skill you are not proficent with, you may add your charisma modifier to the check. You may do this twice per long rest.

At 9th level, you may add your charisma modifier to any non-charisma based skill check.

Tongue In-Cheek

9th-level Silver Tongue feature

After successfully preforming a sneak attack, you may speak empowering words to your allies, or bitter insults to your foe. Choose two creatures of your choice within 30 feet. You may choose to either encourage or insult them. If you encourage them, they may add your charisma modifier to the next attack roll they make. If you insult them, they must remove your charisma modifer from the next attack roll they make.

You may do so a number of times equal to your proficency bonus, and regain all expended uses after a long rest.

Magic Tongue

13th-level Silver Tongue feature

Your abilities of deception and persuasion are frankly absurd, and it's only getting stranger. You learn three 1st level spells and one 2nd level spell of your choice from the bard spell list. These spells must have a verbal component. You may cast each spell once per short rest, expending no material components. The spells have a DC of 8 + your proficiency bonus + your charisma modifier, and a to hit modifier equal to your proficiency bonus + your charisma modifier

You may also expend a spell of your choice and add a bonus to your next charisma check or saving throw equal to three times the spell's level.

At 18th level, you learn a second 2nd level spell and a 3rd level spell from the bard spell list.

Gobbledygook

17th-level Silver Tongue feature

Your slight alterations to truth have given you the ability to speak complete nonsense and gibberish in such a way that it confuses the hell out of your foes. You may as a bonus action speak gobbledygook, and choose up to three creatures that you can see. Those creatures must make a wisdom saving throw, DC 8 + your proficiency bonus + your charisma modifier. On a failure, they fall under the confusion spell. On a success, they take 3d8 psychic damage as they fail to comprehend you.

While the target creatures are under the effect of your gobbledygook, attacks against them have advantage.

You may use this feature once per long rest.