Luckblade

A luckblade imbues the essence of luck into their attacks. A glint of steel, an underhanded swipe. Each slash and stab could very well be the ending of someone's life. Under the patronage of Icosa, anything is possible.

Hold 'Em

At 3rd level when you choose this roguish archetype, you've learned to store luck within your favourite blade. A melee finesse weapon of your choice becomes Lucky. You may give it a name, as well as describe how it is luckier than your other weapons.

Examples include being blessed by a priest, dipped into a stream of the purest waters or having on multiple occasions blocked a potentially fatal attack throughout your travels.

Your Lucky weapon holds an amount of Lucky Dice equal to your Charisma modifier. These Lucky dice are d6s. When you deal a sneak attack with your Lucky weapon, you may consume a Lucky Die to roll an additional d6 to form Hands. Your Lucky Die does not contribute additional damage, however, it does allow you to use it's result to qualify for Hand effects. You regain all Lucky Dice after a long rest.

Hands of Icosa

Also at 3rd level, you've learnt to trust Icosa to guide your blade. When you expend one of your Lucky Dice, the results of the sneak attack dice can create additional effects called Hands. For example, when two of your sneak attack dice show the same result, you are said to have the Hand called Pairs, which has an effect associated with it.

You can see all of the Hands, their requirements, and their effects in the Hands table shown below. When your sneak attack dice form more than one possible combination of Hands, you only choose one of the Hands to take effect.

Certain Hand effects have a DC.

Your DC = 8 + proficiency bonus + your Charisma modifier.

Fold

Beginning from 9th level, you've learned how to cut your losses not only at the table, but on the battlefield. When you expend one of your Lucky Die to form a hand, you can choose to Fold after rolling sneak attack dice. If you do, you regain the expended Lucky Die. You may use this feature up to three times. You regain all uses of this feature after a long rest.

Gambler's Fallacy

Also at 9th level, whenever you fail a skill check, you gain advantage in the next skill check of the same type if you attempt it within one minute.

Playing the Odds

Beginning from 13th level, you have further honed your ability to use and manipulate luck. When you successfully land a sneak attack, after you've rolled sneak attack damage but before damage is dealt, you can choose to reroll one of your sneak attack die or Lucky Die. You may use this feature an amount of times equal to your Charisma modifier. You regain all uses of this feature after a long rest.

Rigged Hand

At 17th level, you have gained the ability to foresee possible outcomes of your attacks for a split second. Once a day, after you have rolled your sneak attack die but before damage is dealt, you may choose a sneak attack or lucky die and set it to any number face up. You regain the use of this feature after a long rest.