Master Assassin

Having been born into a clan of thieves and assassins, you were raised to hone your skills of stealth and death. However, you were rejected by your clan, and were approached by a new family. Having the benefit of knowledge from two assassins' guilds, you have become the perfect agent of death.

Aberrant Dragon Mark

Your dragon mark is aberrant.

Bonus Proficiencies

When you choose this archetype at 3rd level, you gain proficiency with the disguise kit and the poisoner’s kit.

Assassinate

Starting at 3rd level, you are at your deadliest when you get the drop on your enemies. You have advantage on attack rolls against any creature that hasn’t taken a turn in the combat yet. In addition, any hit you score against a creature that is surprised is a critical hit.

Assassins' Souvenirs

Starting at 9th level, when you end a creature's life, you are able to capture a part of the departing soul, a sliver of it's life essence that takes physical form: as a reaction when a creature you attack dies, you can open your free hand and cause a Tiny trinket to appear there, a soul trinket. The DM determines the trinket's form.

You can have a maximum number of soul trinkets equal to your proficiency bonus, and you can't create one while at your maximum. You can use soul trinkets in the followinfgways:

• While a soul trinket is on your person, you have advantage on death saving throws and Constitution saving throws, for your vitality is enhanced by the life essence within the object.
• When you deal Sneak Attack damage on your turn, you can destroy one of your soul trinkets that is on your person to add an additional sneak attack dice.
• As an action, you can destroy one of your soul trinkets, no matter where it’s located. When you do so, you can ask the spirit associated with the trinket one question. The spirit appears to you and answers in a language it knew in life. It’s under no obligation to be truthful, and it answers as concisely as possible, eager to be free. The spirit knows only what it knew in life, as determined by the DM.

Sudden Strike

At 13th level, you can strike with deadly speed. If you take the Attack action on your turn, you can make one additional attack as a bonus action. This attack can benefit from your Sneak Attack even if you have already used it this turn, but you can’t use your Sneak Attack against the same target more than once in a turn.

You may use this ability a number of times equal to your proficiency bonus and regain uses after a short rest.

Death Strike

Starting at 17th level, you become a master of instant death. When you attack and hit a creature that is surprised, it must make a Constitution saving throw (DC 8 + your Dexterity modifier + your proficiency bonus). On a failed save, double the damage of your attack against the creature.