Dreadblade

Rogues who follow the Dreadblade path are experts in causing fear and panic in their enemies. They use their knowledge of fear and intimidation to sow chaos in the hearts of their foes, then strike with deadly precision when their targets are most vulnerable.

Terrifying Strikes

3rd-level Dreadblade feature

You've become adept at terrifying your foes as you strike them down. When you hit a creature with a weapon attack you can force it or another within 15ft of it to make a wisdom saving throw (DC = 8 + proficiency + your dexterity modifier) or become frightened until the end of your next turn, additionally if you hit a creature with sneak attack they have disadvantage on the saving throw. You also become proficient with Intimidation checks.

You can use this feature a number of times per long rest equal to your proficiency bonus.

Dreadful Attacker

3rd-level Dreadblade feature

You also gain an additional way to use your Sneak Attack; you don’t need advantage on the attack roll to use your Sneak Attack against a creature. If that creature is frightened of something then your sneak attack still goes through. The other rules of sneak attack still apply.

Merciless Smite

9th-level Dreadblade feature

You have learned to target certain points of the body to achieve desired effects. When you hit a creature with sneak attack you can use one of the following abilities. If the ability requires a saving throw then it is (DC = 8 + proficiency + your dexterity modifier). 

Name	Effect
Blood Cloud	You spray the targets blood in a zone around them, acting like a Fog cloud spell for 1d4 rounds which you can see through.
Maniacal Blow	You twist the tendon of the target, knocking them prone and making them unable to take reactions until the end of their next turn.
Crimson Step	Their blood makes a trail for you to follow, allowing you to teleport within 15ft of the target directly after hitting them.
Debilitation	You target a creatures eyes or ears, forcing them to make a Constitution saving throw or be under the effect of Blindness/Deafness until the end of their next turn.

You can use this feature twice per long rest. If you roll a 20 on an attack roll, you regain a use of this ability.

Force Through Fear

13th-level Dreadblade feature

You gain the ability to restore your own vitality through the fear of others. You have advantage on saving throws against being frightened. Additionally, when you frighten a target you gain a number of temporary hitpoints equal to half your rogue level (rounded down). 

Master of Terror

17th-level Dreadblade feature

You've become the incarnate of fear itself, and your mere mention could strike fear into your opponents hearts. You become immune to being frightened. Whenever you use your Merciless Smite against a target that is frightened, you do not expend a use of the feature. Additionally, whenever you roll initiative. You regain a use of your Merciless Smite.