Shadow Ward

Wondrous item, very rare (requires attunement)

This eerily still cloak seems to absorb some of the light that touches it. While wearing this cloak, you have advantage on Dexterity (Stealth) checks while in dim light or darkness. In addition, the cloak has a number of charges equal to your Dexterity modifier and regains all expended charges over a long rest. When you’re hit by an attack, you can use a reaction to expend 1 of the cloak’s charges to halve the damage you take from the attack and teleport in a plume of black smoke to an unoccupied space you can see within 60 feet of you.

Darkness is still. Darkness is comforting. Darkness is home.