Swirling Shadows

A cloud of shadows envelopes you for 1 minute, and you are heavily obscured to others. The shadows turn dim light within 10 feet of you into darkness, and bright light in the same area to dim light. Until the spell ends, you have resistance to Radiant damage and whenever a creature within 10 feet of you hits you with an attack, the shadows retaliate, dealing the attacker 2d8 Necrotic damage.