Alistraza
Alistraza is a legendary one-handed electric boomerang.
A 
stardust relic that was designed to help lost altas find their way home. Seems like it’s lost part of its power.
Ingame
Radiomessages on pickup:
- You’ve just picked up an alta weapon, or an “energy tool”, as they call it. According to my database, these usually have an extended set of features. I suggest reading its description.
Sources
Can be bought from merchants:
Can be obtained from special items:
Can be obtained via 
Spawnable Item Pack or 