These use a pretty cool spear throw attack with a 12 second cooldown.
They also have a basic attack which has some innate AoE, which does mean we can trigger melee splash multiple times if the initial melee attack hits multiple targets, making clear quite significant.
These can be found in maps that contain Drox's citadel.
This video was recorded in patch 3.22.
![](https://i.ytimg.com/vi/YdGEJjeU_QE/maxresdefault.jpg)