Malice

Appearing like a phantom, striking like a cold chill, and disappearing like a whisper. 

Phantom Walk

Starting at 3rd level you gain the ability to vanish from sight. You can use your Cunning Action to turn Invisible until the start of your next turn. This invisibility is broken upon making an attack or causing a target to make a saving throw.

Malicious Blow

At 3rd level, when you are able to apply sneak attack you may cause one of the following effects. The effect lasts until the start of your next turn.

• Target must subtract a d4 from it's next attack roll or saving throw.
• Target has disadvantage on Strength and Dexterity ability checks.
• Target chooses the target of it's next attack at random.
• Target is hobbled and has their movement speed reduced by 10ft.

Stalker's Step

Starting at 9th level when you use your Phantom Walk you can choose to step into a another creature's shadow that you can see within 30ft. If you would travel through a hostile creature you can choose to inflict it with one of the effects from Malicious Blow. If the creature into who's shadow you stepped takes Sneak Attack damage this round roll an additional 3d6.

Malicious Intent

At 13th level the effects of Malicious Blow can spread to an additional creature. Whenever an effect of Malicious Blow is triggered you can cause it to spread to another creature within 60ft. 

Death Stride

Starting at 17th level, whenever you use your Stalker's Step to enter the shadow of a hostile creature you can, as a reaction, prick them with a needle of solidified Malice. That target now suffers all effects of Malicious Blow and takes damage equal to half of your Sneak Attack roll.