Guild's Staff

The Guild's Staff is a Pet summoning item that is dropped by Skeletron. It spawns a Lil' Necromancer to follow you around. The Lil' Necromancer is immune to damage from enemies and despawns upon player death.

Trivia

 * This item and the pet itself are a reference to the  light novel series, in which the main character, Ainz Ooal Gown, is a necromancer with a similar appearance to the one that can be spawned with the item.