This Sub Class is based on the character Akshan from League of Legends.(Also this is more of a concept rather than a finished homebrew so the balancing may be off)

You were raised in the streets of an ancient city learning how to fight without rules and use magical artifacts to their fullest extent.

Dirty Fighting

You manipulate your cunning and personality to its fullest so even when you are in a disadvantageous scenario you will always come out on top.

Starting at 3rd Level When you have disadvantage on an attack roll you negate the disadvantage and instead add your Charisma Modifier to the roll you can use this feature a number of times equal to your proficiency bonus before long resting

Heroics

Starting at 3rd Level Gain immunity to the frightened condition

Avenger

You harness innate magic from the surroundings, allowing you to heighten your senses around those who have wronged your allies.

Starting at 9th Level When an ally is at 0 Hp gain 15ft of Move Speed and Advantage against the creature who dropped an ally to 0 Hp This effect ends after 3 rounds or when all 0 Hp allies are stabilized

 

Going Rogue

You have become highly adaptive and can use your charm and wit to sway the outcome of any scenario in your favor

Starting at 13th Level As a Bonus Action Gain a buff depending on the situation you are in, you cannot use this feature again until you long rest

• Combat For 1 minute when you roll Sneak Attack Dice do it Twice and take the higher value
• Social For 1 minute Add your Dexterity modifier to all ally Deception, Persuasion, and Performance Checks
• Skill Challenge For 1 minute Add your Charisma Modifier to all ally Skill Check as long as you are proficient in that skill
• Exploration For 1 minute Add your Charisma Modifiers to all your Dexterity Saves Against Traps

Comeuppance

When you eliminate a scoundrel who killed one of your allies that ally will become rejuvenated and brought back to life.

Starting at 17th Level When you drop a creature to 0 Hp who has dropped an ally to 0 Hp within the last 24 hours heal and revive that ally equal to your Charisma Modifier x Proficiency Bonus