Minecraft Dungeons:Vex

Vexes are flying hostile mobs found $$.

Spawning
For it to spawn, the evoker has to be within the range of the player and it spawns as one of the evoker's spells. They would usually spawn in groups of five.

Appearance
The Vex's appearance in Dungeons is the same as its original appearance in the base game, with the only difference is it being more luminescent and glowing unlike its normal, default counterparts.

Behavior
Unlike the base game, the vex attacks like any normal enemy, with it not being able to go through blocks. There is no limit to the number of vexes following the player.