Ink Golem (5e Creature)
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Huge construct, unaligned
Saving Throws Con +8
Immutable Form. The ink golem is immune to any spell or effect that would alter its form.
Constructed Nature.The ink golem doesn't require air, food, drink, or sleep.
Blob Nature. The ink golem cannot be knocked prone.
Multiattack. The ink golem can take a Quick Movement action; it then makes one ranged or melee attack.
Explode. Every creature within 40 feet of the ink golem must succeed on a DC 18 Dexterity save or take 65 (10d10 + 10) poison damage and be knocked prone, taking half as much damage and staying upright on a successful save. This action reduces the ink golem to 0 HP.
Ink Blob. Ranged Weapon Attack: +7 to hit, reach 25 ft., one target Hit: 18 (4d8) poison damage. Creatures within 10 ft. of the target must succeed on a DC 18 Dexterity save or take 15 (3d8 + 1) poison damage.
Slam. Melee Weapon Attack: +9 to hit, reach 10 ft., one target. Hit: 20 (4d10 + 10) bludgeoning damage plus 18 (4d8) poison damage.
Quick Movement. The golem launches itself to a location up to 45 feet away. It may choose a location occupied by another creature; if it does, the creature is pushed to the nearest unoccupied space and must successfully make a DC 15 Dexterity save or take 11 (3d6) bludgeoning damage and be knocked prone.
A huge blob of rainbow ink given life by a powerful mage to protect priceless books. If it cannot protect what it guards from intruders, it explodes, killing them and stopping anything else from using the knowledge. After doing so, it will reform in 2d4 days if left alone, congealing itself from excess ink and restoring the books to usable condition.