Minecraft Dungeons:Necromancer

The Summoner also known as the Necromancer is an undead mob found in Minecraft Dungeons.

Appearance
The Summoner looks similar to the Nameless One, but shorter by half a block and has blue turfs, greenish eyes, and it wears a gold crown-like headwear. In default difficulty, it spawns in the Desert Temple only.

Behavior
Summoners will attack the player using the staff they hold which will shoot blue balls to and summon undead mobs to attack the player.