UnderDog

You are at your best when your situation is at its worst. Learn to use your wits to overcome adversity. Know that by playing off of expectations & ego that strength can be come weakness or weakness to strength. After all, an animal backed into a corner is at its most dangerous.

Smartly Done

At 3rd level, you master the concept of "mind over matter" to aid you in physical task. You can add your Int. modifier to ability checks & saving throws that use Str. You can add your Wis. modifier to ability checks & saving throws that use Dex. You can add your Cha. modifier to ability checks & saving throws that use Con. You may use this feature after rolling the dice but before you know if you succeeded. You can use this feature a number time equal to your Proficiency Bonus & regain all uses after a long rest.

Reversal of Fate

At 9th level, you have mastered how play up how weak you are, how inevitable your opponent's victory is. You instantly, if not magically, know how to best aid your allies & distract any foe from their task. As a reaction, when a D20 roll made within 30ft from you that you are aware of (in game) & that is at advantage or disadvantage is now reversed (advantage becomes disadvantage & disadvantage becomes advantage). You can use this feature a number time equal to your Proficiency Bonus & regain all uses after a long rest.

Rise to Challenge

Thinking on your feet your feet will get you out of the direst situations. At 13th level, when making saving throws & skill checks that use Str., Dex., or Con. at disadvantage, you can automatically apply the effects of "Smartly Done" to the checks & saves. This does not count against your uses of "Smartly Done".

Provoke Monolog

At 17th level, while your HP is less than half & less than your adversary, you can use your action to force them to make a Wis. Save against your Deception Check. If they fail, they will start to monolog and be unable to take any actions, bonus actions or reactions. Any attacks made against them is at advantage. The duation of the effect is a number of rounds equal to half the difference between your check & there save. Whenever you or an ally take Action or Bonus Action, the target makes a perception check against your rouge level, on a success the monolog ends. The monolog also ends if ally of yours interacts with them or they take damage. DM determines how much information is divulged. You can use this effect once every short rest.