Runebound Serpent

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Medium Monstrosity, Neutral Evil

Armor Class 15 (natural armor)

Hit Points 105 (14d8+42)

Speed 30 ft. fly 60 ft.

STR 16 (+3)

DEX 14 (+2)

CON 17 (+3)

INT 10 (+0)

WIS 12 (+1)

CHA 8 (-1)

Saving Throws Con +6, Wis +4

Skills Stealth +5, Perception +4

Senses darkvision 60 ft., passive Perception 14

Languages Common, Draconic

Challenge 7 (2,900 XP) Proficiency Bonus +3

Keen Senses. The Runebound Serpent has advantage on Wisdom (Perception) checks that rely on sight, hearing, or smell.

Runic Flight. Its wings are parchment etched with glowing runes. While flying, the runes confer a +1 bonus to AC.

Ink Ward. When targeted by a ranged attack, the parchment wing swirls and releases a cloud of ink, subtly obscuring the attacker and potentially hindering further strikes.

Actions

Multiattack. The Runebound Serpent makes three attacks: Bite, Wing Slash, and Tail.

Bite. Melee weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 13 (2d8+4) piercing damage.

Wing Slash. Melee weapon Attack: +6 to hit, reach 10 ft., one target. Hit: 11 (2d6+4) slashing damage. The parchment wings slash outward. If the target is Medium or smaller, it must succeed on a DC 14 Strength saving throw or be pushed 5 feet away.

Tail. Melee weapon Attack: +6 to hit, reach 10 ft., one target. Hit: 7 (1d8+3) bludgeoning damage. If the target is Medium or smaller, it must succeed on a DC 14 Strength saving throw or be knocked prone.

Runic Burst (Recharge 5-6). The parchment runes flare, releasing a wave of magical force in a 15-foot cone. Each creature in that area must make a DC 14 Dexterity saving throw, taking 22 (5d6+5) force damage on a failed save, or half as much on a successful one.

Environment Forest, Hill

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Lore & Description

Appearance

A sinuous serpent with copper-inked scales that resemble aged parchment. Its wings are four vast sheets of parchment, edges frayed and curling, each covered in runes that glow with pale blue light. As it moves, the runes ripple like moving script, and a faint scent of old ink fills the air. When it breathes, a brittle gust of paper flakes drifts from its maw. The Runebound Serpent dwells in ruined libraries and mist-shrouded glades, guarding knowledge and punishing those who would deface it.

Behavior & Origins

Ancient scribes believed knowledge should be carried by living pages. Legends tell of a mighty spellbound library that bled into the world, fusing with a slumbering serpent to birth the Runebound Serpent. Its parchment wings carry the whispers of countless tomes, and its runes grant both ward and weapon. It hunts intruders who seek to steal or destroy knowledge, while tempting scholars with glimpses of forbidden lore.

Generation Info

Original prompt:
"A serpent with wings made of parchment covered in runes."

Created: Feb 2, 2026
Modified: May 22, 2026