Call Lost Souls
Version 0.14: This article may not be up to date for the latest stable release of Crawl.
Call Lost Soul is a monsters-only spell which summons a single lost soul. This undead creature will eventually disappear on its own, but will likely give its life before that point to revive a fallen ally.
The following monster can cast Call Lost Soul:
History
Call Lost Soul was added in 0.13.