Student of Undeath

By forsaking knowledge and access to all other schools of magic, the Necromancer expands their spell access to ALL spells of the necromancy type, across all classes.  Spells from Non-Wizard classes, when used by the Necromancer, are treated as Wizard class spells in regard to Spell Casting Ability and requirements.

Forsake All Others

Starting at 2nd Level the Student of Undeath may only learn and cast spells from the School of Necromancy, and must remove spells from other schools from his spell book.  This allows the Wizard to have access to all Necromancy spells of the level he can cast from across all classes, not limited to those a Wizard can normally choose from.  Death provides knowledge in full to those who are willing to devote themselves to it.

Death Fed

Starting at 2nd Level the Student heals themself for 1/2 the damage inflicted by their own necromancy spells on a living creature (not Undead or Construct) other than themself, drawing a portion of the life energy removed from the target back into themself.  

An Old Friend

Starting at 6th Level, and again at every even level after, the Student may select a spell that they have become so intimately familiar with that they no longer need to spend time preparing it.  It does not count against the maximum number of spells allowed to be prepared for the day.  

The student also gains Resistance to Necrotic damage due to their constant exposure to and study of it.

Herald of My Will

Starting at 6th Level you may deliver Spells with a range of "Touch" by using an undead that you have control over as your conduit.  This spell uses up their action, and cannot be used if they have already acted this round.  

Warden of the Dead

Starting at 10th Level the Student realizes that even the undead have some thread of life animating them.  The Student has learned to find that thread and yank it for themself, causing Death Fed's effects to work on Undead now. 

This further familiarization with Death has made it more difficult to find solace with the light.  Non-Necromancy spells only provide the Student for 1/2 the healing (Rounded Up) they normally would have.

Angel of Death

Death become you at 14th Level.  The Student takes on the visage of Death, gaining a pair of wings (either Black Feathered, or Bat) allowing them to fly at a speed of 25 ft.

The Student takes their familiarity with death and undeath to such a level that they are immune to Necrotic Damage and  Resistant to Cold Damage.

The amount of Necromantic energy coursing through the student has reached such a level that normal healing spells can no longer provide respite, the Student can no longer be healed by Non-Necromancy spells.

Death is relentless.  When the Student uses Hit Dice to heal during a short rest, they can roll 2 dice for each Hit Die spent.

The Student may summon the Reaper's Scythe at will.