Evoker

The Evoker is a mob added to 1.11 and is one of the two "Illagers", the other being the Vindicator.

Behavior
The Evoker hates and attacks Villager s, and when attacking will spawn alligator-like teeth that snap shut and deal. Whilst this may not sound like a lot, it does this damage regardless of what difficulty or armour you have on. So even with diamond armour it can kill you in only four blows, and not to mention the vexes and vindicators.

It will also spawn Vex es. The Evoker is a more advanced Witch.