Aegis of Shadows

Upon utilizing a standard action, You consume 2 Shadow Essence, Upon casting this spell you summon Cloud of Darkness that spreads for 30ft around you, only you can see through this magical darkness, within the magical darkness, creatures gains a +3 to AC, and additional 4d6 temporary hit point of  , while the magical darkness is active, you can choose to move it for half of your walking speed as a bonus action

Upon reaching 11th level the Cloud radius increases to 40ft 

Upon Reaching 17th level the Cloud radius increases to 50ft