The Necromamcer would have be an illager miniboss, and would have 40 health. Similar to the evoker or illusioner, the necromancer would have magical abilities. It would have three attacks; summoning zombies and an occasional skeleton (commonly used), use a defensive fang attack in a spherical radius (rarely used), or give the player both blindness and slowness 2 for 10 seconds (used once per opponent).

Edit: Changed the shading on the legs a bit and added a hidden emerald necklace