OGC:Bibliognost (5e Creature)
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Medium undead, neutral
Saving Throws Dex +7, Con +6, Int +10, Cha +4
False Appearance. While the bibliognost remains motionless, it is indistinguishable from a large pile of books.
Immutable Form. The bibliognost is immune to any spell or effect that would alter its form.
Innate Spellcasting. The bibliognost's spellcasting ability is Intelligence (spell save DC 18). The bibliognost can innately cast the following spells, requiring no material components:
Inscrutable. The bibliognost is immune to any effect that would sense its emotions or read its thoughts, as well as any divination spell that it refuses. Wisdom (Insight) checks made to ascertain the bibliognost’s intentions or sincerity have disadvantage.
Magic Resistance. The bibliognost has advantage on saving throws against spells and other magical effects.
Multiattack. The bibliognost makes a slam attack and uses mind thrust.
Slam. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 12 (2d8 + 3) bludgeoning damage.
Mind Thrust. A bibliognost focuses its mind on a creature within 60 feet. The target must make a DC 18 Wisdom saving throw. On a failure, it is magically haunted with visions and takes 27 (6d8) psychic damage, or half as much on a success.
Mental Assault (Recharge 5–6). The bibliognost magically assaults the minds of creatures in a 30-foot cone, overloading them with knowledge. Each creature in that area must make a DC 18 Intelligence saving throw or take 36 (8d8) psychic damage and gain one level of exhaustion. On a successful save, a creature takes half damage and is not exhausted.