Arcane Shroud

You create a shroud of magic around a creature within range. The shroud is invisible to the naked eye, but can be detected using magical or supernatural means. The shroud remains for the duration. The shroud can cause the following effects (you choose which effect it will use):

• Shroud of Invisibility: The creature becomes invisible, as the spell, but not for more than 5 minutes.
• Shroud of Speed: The creature's movement increases by 10 feet.
• Shroud of Darkness: The creature gains becomes shrouded in darkness. It gains total concealment, and it becomes effectively blinded.
• Deathly Shroud: Every time the creature is attacked, it takes 1d4 necrotic damage in addition to whatever damage it already took.
  
  

The maximum duration increases by 5 minutes for each spell level after the 1st.