Thamuz

Thamuz is the arch demon of emotions and of wicked desires, above all greed, lust and avarice. He can carry out any act of thievery without ever failing (every thieving talent at 99%), values any treasure with complete accuracy and takes foes by surprise 95% of the time, so evil rogues and thieves often revere him. He can radiate greed, lust or any other single emotion for twenty feet around him, and everyone in range falls under his sway. He is said to visit the prime material plane now and then for the express purpose of tempting good or neutral people into doing evil. In a fight he uses a sword, a garotte or a sap, all of them magical, striking three times a round. Any surprise attack, such as a stab in the back or an ambush, does ten times normal damage, and he can always choose to leave a victim stunned or unconscious instead of dead.

When properly summoned, Thamuz offers a single wish, provided its purpose is essentially evil. A summoner who asks for riches receives 1-10 times 100,000 gold pieces' worth of gold, silver or gems, but anything Thamuz gives has always been stolen, and there is a 25% chance it came from owners close by who will certainly be looking for it. Without a proper offering, he tries to knock the summoner senseless and rob them of all their money and belongings.