The Mark of Shadows

Prerequisites: Character lvl 10+ and at least one level in the Rogue class

“Silent as shadows. Bold as night. Calm as wind. One shall die tonight.” 
― Ella Fleming-Christie, Crimson Exchange

You are well experienced in the ways/ practices of staying hidden and confirming stealthy kills. You learn how to control the element of  shadows and the environment around you. As you gain experience in the use of this skill, you gain more proficiency with it, and learn how to better control it.

• You learn the Invisibility spell with a scaling amount of uses
• When taking this feat, you now have a scar that looks like a magical eye symbol somewhere on your character

The Invisibility spell will start with a use of once per long rest at level 10 and with every other level afterwards, you gain one additional use, and you can use Invisibility at will when you reach lvl 20 (as shown below). This spell will be counted at a limited use action and thus, may not be used with spell slots. Differing from the Invisibility spell, this can be cast on only yourself and not other targets. In addition, this feat's version of Invisibility may be used as a bonus action if you've obtained the cunning action skill from the rogue class.

 (This is essentially a different version of the  "Shadow Touched" feat)