Shadow Grifter

Rarely will the shadows be anything but dangerous, but even rarer will the shadows actively attack you. Of the workers of death in the shadows, Shadow Grifters are some of the most scary, being able to leap from shadow to shadow and melt into darkness and disappear completely. Using the shadow stuff of the shadowfell, they can weave and shift light and even become a living shadow themself, more often than not selling their skills to the highest bidder, acting as assassins and hitmen, eliminating their targets before they even realize anything happens.

Shadow Forge

When you choose this archetype at 3rd level, you can generate and produce shadow to produce the effects of spells. You can cast the spells Invisibility, Darkness, and Shadow Blade. Constitution is your Spellcasting modifier for these spells and they don’t require material components to cast. Additionally you no longer suffer disadvantage on stealth rolls from certain armors.

You can cast these spells a total amount of times equal to your Constitution modifier(minimum of once) per long rest.

Dark Stride

Starting at 7th level, you can jump from shadow to shadow in the blink of an eye. By expending your movement in dim or darker light, you can immediately teleport feet equal to 20 times your Constitution modifier with a maximum range of 50 feet(minimum of 20 feet) into the nearest shadow. Additionally you gain Darkvision out to 60 feet, if you have darkvision previous to this(such as from a racial feature), it increases by 30 feet.

you can use this feature times equal to your proficiency modifier per long rest.

Dread Presence

At 10th level, you are able to seep tendrils of darkness into your enemies when you hit them with all your force. Whenever you make a critical hit with a melee weapon attack or a melee spell attack, the creature must make a wisdom save (dc = 8 + proficient modifier + constitution modifier) or be frightened for a minute.

Fell Strike

Starting at 15th level, you can use your skills of shifting in the shadows to strike unexpectedly. Whenever you use your dark stride feature and there is a creature within 5 feet of where you teleport, you can use your bonus action to immediately make a weapon attack against the creature, if the attack hits, it deals extra damage of the weapon type equal to your proficiency modifier.

you can only use this feature once per turn.

One with Shadow

At 18th level, you are able to masterly sneak away in even the most open of situations. You can use the dash, disengage, and hide actions as bonus actions, and you have advantage on all Stealth rolls you make.