Minecraft Dungeons:Necromancer

Necromancers are undead hostile mobs found in Minecraft Dungeons that can summon undead mobs. They look similar to the Nameless One but are slightly shorter.

Appearance
The Necromancer is a large skeleton that wears blue turfs, has greenish eyes, and wears a gold crown-like headwear. Necromancers always hold staffs. In Default difficulty, it spawns in Desert Temple,in Adventure difficulty,it spawns in Cacti Canyon and in Apocalypse difficulty,it spawns in Creeper Woods and Creepy Crypt

Behavior
Necromancers use their staffs to summon undead mobs such as zombies and skeletons to attack players.

Necromancers will also rapidly fire damaging bolts or beams from their staffs to players.

Trivia

 * Internally, the Necromancer is known as the Summoner