Lesser Voidcaller
Drops from High Astromancer Solarian. The lanterns carried by Voidcallers bridge the realms of the living and the dead, and often attract wayward ghosts and spirits. Magic type. This pet has a passive effect, which uses this spell to summon a Wayward Spirit.
The Lesser Voidcaller is a battle pet obtained from the 
Crystal of the Void, which drops from High Astromancer Solarian, the third boss in The Eye, a Burning Crusade raid.
Guide awaiting review
Enter The Eye Raid
Travel to The Eye and head to High Astromancer Solarian at 74, 48.9 — she is the third boss in this level 70 Burning Crusade raid and can be soloed at max level.
Defeat High Astromancer Solarian
Defeat High Astromancer Solarian at 74, 48.9 in The Eye and loot the Crystal of the Void, then use it to learn the Lesser Voidcaller pet.
Complete Raiding With Leashes II
The Lesser Voidcaller is one of the pets added in patch 5.3 that contributes toward the Raiding with Leashes II: Attunement Edition achievement, which rewards 
Tito's Basket and teaches Tito.
Tips
The Lesser Voidcaller has a passive effect that occasionally summons a Wayward Spirit, a small pinkish ghost that wanders around for a while.
