/summon minecraft:illusioner Once you have typed in the command, you simply need to hit Enter, and then the Illusioner will spawn nearby.

In Minecraft Java Edition, there is a small chance that certain hostile mobs can spawn with armor parts or any item in their hands. For example, hostile mobs like zombies and skeletons can spawn ...

Instead, you'll need to spawn it into the game using cheats. Here's how to get a command block in Minecraft, using either Java or Bedrock edition.