This subclass was made because of my love towards this character, the guy is a Giga of the Chad type. You can, like me, use this as a omage to this character or, find a way to make it work in the Medieval Fantasy setting. There are multiple ways of doing so: A Disgraced Monk, a City Raised Monk or even a simple Wanderer trying to get advantage at every moment.

Anyway, have fun and remember to always talk to your DM before using it.
Addendum: Thiago, please let me use this.

Love Train

BONUS PROFICIENCES:
When you follow the Way Of The Gambler at 3rd level, you gain proficiency with a playing card's set. You also gain proficiency in Sleight of Hand and Deception.

FAIR TRADE:
When you gain this feat at 3rd level, you lose the ability to use ki by any means outside of Gambles. 

GAMBLES:
You spend a bonus action and 1 ki point to activate Gambles. The Gambles are an imaginary playing world that you project with you spirit, this world is at your or your DM's description, normally having absurd things and laws.
When the Game starts you roll 3D6 in the hopes of matching the same number thrice.
If you fail a Gamble you recover the expended Ki.
If you are successful you hit a Jackpot. Jackpot's lasts 1 minute.
Jackpot(3rd Level):
- You are able to use your bonus action as a Attack Action or Movement Action.
- Your AC is boosted, the bonus is equal to 1 + double your proficiency bonus.
-Ranged Attacks and Spell Ranger Attacks farther away than 40ft(8m) can't hit you.
You may choose 1 from the 3. 

You may only have 1 Jackpot active at a time.
The Gamble cost gets higher at: 5th 2 ki, 9th 3 ki, 13th 4 ki and 17th 5 ki.
In those same levels, the Jackpot time duration gets longer by 1 minute.

PSEUDO-SPIN:
When you are in a Gamble, and after you have rolled the 3D6. You may use ki points to change the value of 1 of the dice, 1 ki per dice. To either:
- Add +1
- Subtract -1
- Reroll it.
If the resulting number completes the 3 sets of dice, of have won a Gamble. If you add +1 to a 6, and if you give -1 to a 1 it becomes a 6.
You can, add, subtract or reroll only once per dice at 3rd level and twice at 10th level.

Big Hype!!

At 6th level, you gain the ability to accumulate Hype Points. Hype Points are acquired after winning a Gamble and hitting the Jackpot.
The maximum of Hype Points you can have at a time is 3, all Hype Points are lost after a long rest.

You may use Hype Points to add +1D6, for each Hype Point used, to you next Gamble.
You still only need 3 of the dice to match.
And if you win the next Gamble, no Hype Points are added.
Decide if you use Hype Points before the actual roll.

Gambler Tendencies

ALL IN.
At level 11th you gain a new way to approach Skill Checks and Saving Throws. Instead of rolling the D20 you can simply start a Gamble. The Rules of this Gamble don't change except for the rewards.
- If you fail the Gamble, the Skill Check or Saving Throw is considered a Critical Failure.
- If you succeed the Gamble, the Skill Check or Saving Throw is considered a Critical Success.

ON A ROL... ****!
If you lose a Gamble your addiction catches up with you. In your next turn the Addiction starts and ends.
- For 1 full turn you have resistance to all damage.

True Love Train

TRUE LOVE TRAIN.
At level 17th, you become a Master of Gambling being able, if necessary, to sell your own family for personal gain you unlock these abilities.

Straight Jackpot:
You are now able to have 2 Jackpot's active at the same time.
Also you unlock 2 new Jackpot's to choose from:
- Every unarmed attack, has the Damage buff of a Critical Hit.
- You gain the ability to heal 1d8 of damage every time you are damaged yourself. 

Not a problem if no one saw it:
When you roll the Sleight of Hand Skill Check, any number lower then a 9 on the dice is replaced to a 10.
And you gain a DC 25 Perception check if anyone tries to notice you cheating in a game of cards.