Book Spider

Spider Climb. The spider can climb difficult surfaces, including along ceilings, without needing to make an ability check.

Web Walker. The spider ignores movement restrictions caused by webs, and it knows the location of any other creature in contact with the same web.

Paper Construction. If any part of the spider is wet, that area becomes vulnerable to bludgeoning, piercing, and slashing, but is now no longer vulnerable to fire damage to the wet area but if hit with fire in that spot and that spot is no longer wet.

Intelligence Dependent. If the spider's intelligence goes below 6 it dies

Bite. Melee Attack Roll: +5 , reach 5 ft. Hit: 7 (1d8 + 3) Piercing damage plus 7 (2d6) Poison damage. The spider's intelligence score goes up by the creatures intelligence modifier, going down if they have negative.

Paper Web (Recharge 5–6). Dexterity Saving Throw: DC 13, one creature the spider can see within 60 feet. Failure: The target has the Restrained condition until the web is destroyed (AC 10; HP 5; Vulnerability to Fire damage; Immunity to Poison and Psychic damage).

Papercut (Recharge 5–6). The spider fires a blows out a 15-foot cone of pages from books. Each creature in that area must make a DC 12 Dexterity saving throw, taking 17 (5d6) slashing damage on a failed save, or half as much damage on a successful one.