Marcus's tower

The wizard Marcus's knows quite a lot about Magical objects and creators and for fee can identify any thing magic. Marcus is also familiar with the town and its people but being a Wizard doesn't socialise that much and hence doesn't have the best incite of people (deception DC 10). Marcus is greedy and is looking to make as much money as he can, knowing the creature cant easily get up his tower he feels safe although Marcus is not to worried about going missing as he has a hunch of what might be causing the attacks he believes it to be an ooze and is willing to tell you that for free and offers to tell you more for a price; 5gp more he knows they feed on memories 15 gp or more he knows they can shape shift 20gp he suspects that he knows where they came from an ancient tale of a mad mage obsessed with his traumatic memories He has lots of work and has no intention on fighting one of these oozes though with monetary incentives he might join. he has 20 hit points AC 13 and can cancel the spells it casts