It is said said great authors put a part of their hearts, sweat, blood and souls into their masterpieces. This is often more than true for works on arcane knowledge. Some works become like entities on their own and begin to feed on the energy of their creator. Sometimes they consume even more energy than a mere arcane book can contain. Such overloaded books begin to 'bleed' out some of the lifeblood and essence they contain in the form of magic ink. While a single book can merely produce some inconsequential droplets of soul-ink, a large number of books that provide such ink might pool into a greater blob. This combined essence quickly gains a form of sentience of their own and feeds on lesser pools to grow in size and power. Since they become very protective towards the books that spawned them and they still feel some kind of mystical connection to, they are usually rather seen as useful than just a mere nuisance, though they are always quite hostile towards strangers. Since in theory they can absorb unlimited amounts of essence pools and grow to abominably sizes, they are commonly culled by the keepers of the libraries that spawn them and split into lesser, better manageable blobs of smaller size. The refreshment of fading inks in old books, destruction of vermin as well as mold and keeping the pages at the ideal state of dryness counts to their more usual functions. They tend scare away some nosy intruders and keep visitors out of areas they are unwanted in. While relatively 'newborn' ink blobs are timid and react to strangers with scary faces and bubbly noises older, more experienced blobs, become considerably more aware of their own capabilities and grow more and more aggressive and malignant.
Ink Blobs have 9500 hitpoints. They are immune to earth damage and cannot be paralysed. On the other hand, they are weak against energy damage. These creatures can neither be summoned nor convinced. In addition, they are able to sense invisible creatures.
Ink Blobs yield 17000 experience points. They carry envenomed arrows, giant shimmering pearls, inkwells, platinum coins, poisonous slime, small diamonds, small topazes and sometimes other items with them.