ability to speak and understand all languages
Least Yugoloth
These creatures are often summoned to protect treasures valued at less than 25,000 gold pieces. Least yugoloths have a 50% chance of being immune to one additional type of attack.
Yugoloth guardians must remain at all times within 90 yards of the object they have been summoned to protect. Within this 90-yard radius, yugoloth guardians prefer to remain at a distance in battle, using their breath weapon to maximum advantage.
Summoning a guardian daemon is a dangerous affair. There is a 10% chance for each level the summoner is over 7th level of having his request for a guardian daemon granted (maximum chance of 90%). Conversely, if the summoning fails, there is a 30% chance (-2% per level of the summoner over 10th) that the daemon takes offense and gates in to slay the spellcaster.