Fortune favours the bold

Whenever you make an attack with fortune, you may spend 2 hit dice and roll them, taking that much damage to gain advantage on attacks until the beginning of your next turn.
Additionally, whenever you roll for damage with fortune after using this feature, you gain gold equal to the damage rolled.

Lady Luck is smiling

Tymora watches over you, occasionally guiding an attack that would otherwise miss to an enemy weak spot.
Attacks with fortune score a critical hit on a roll of 7 or 20

The Great Wheel

Whenever you score a critical hit with fortune, roll 3d10s.
For each 7 rolled, you may make 1 additional attack.

Jackpot

If you roll 3 7's on The Great Wheel, Tymora reaches across from her realm and offers her aid.
Describe the assistance you seek. The DM chooses the Nature of Tymora's aid; the Effect of any Cleric spell or Trickery Domain spell would be appropriate.

Tymora also grants a boon to fortune, she hands 2 6 sided dice over and instructs them to roll them.

2d6	Property
2	Fortune functions as a defender.
3	When you hit with an attack using fortune, the attack deals an extra 1d6 damage.
4	When another creature that you can see within 60 feet of you makes an ability check, an attack roll, or a saving throw, you can roll a d10 and apply the result as a bonus or penalty to the roll. Once you use this feature, you can't use it again until you finish a short rest.
5	Increase the bonus to skill checks by 1, to a maximum of +3. Reroll if fortune already has a +3 bonus. Reroll if fortune already has a +3 bonus.
6	Fortune functions as a ring of spell storing.
7	Increase the bonus to attack and damage rolls by 1, to a maximum of +3. Reroll if fortune already has a +3 bonus.
8	While wielding fortune you can use a bonus action to make a weapon attack using a gold coin.  A coin thrown this way uses the same attack bonus as fortune and deals 1d4 damage. The thrown coin has the Finesse, Light, Range (20/60) and Thrown properties.
9	Increase the bonus to saving throws by 1, to a maximum of +3. Reroll if fortune already has a +3 bonus. Reroll if fortune already has a +3 bonus.
10	You can add a d10 roll to any ability check, attack roll, or saving throw you make. Once you use this feature, you can't use it again until you finish a short rest.
11	When you score a critical hit using fortune you roll 1 additional damage die.
12	Fortune functions as a vorpal sword.

 

Proficiency with a Longsword allows you to add your proficiency bonus to the attack roll for any attack you make with it.

Notes: creature of good alignment, Damage, Combat, Versatile, Sap