Astral Serpent

These draconic serpents may appear in the most unexpected and remote places across all the planes of existence as they possess a unique innate ability to travel through dimensions. By forming intricate circles with their shimmering sinuous bodies, they are able to open arcane portals that manifest as sparkling and radiant gateways, pulsating with vibrant energies.   Dimensional Snake. When an Astral Serpent wishes to go on interdimensional journey, it gracefully weaves and knots its serpentine form into an intricate circular shape. During this process, the scales of the serpent resonate with arcane power. It is commonly thought that portals to planes of existence that are further away, require a more difficult shape or pattern than dimensions that are close to the plane of existence the serpent is currently on. When the process is completed, a portal opens in the middle of the circle and the serpent will slither through it. During this time, other creatures may pass through the portal as well, but after the serpent has almost completely gone through the portal, a small flick of the serpent’s tail closes the portal.   Wisdom of the Planes. In some cultures, Astral Serpents are thought to be ancient and mysterious beings and are considered symbols of freedom and exploration. For others they serve as spiritual guides of sorts. They believe that an Astral Serpent may open a doorway to the Divines and in that manner provide a way of spiritual growth or even the return of the Divines from beyond The Veil. Because of this, encountering an Astral Serpent is thought to be a rare and special event. However, seeing one opening a portal, or even traveling with one towards another dimension is almost seen as sacred for those fortunate enough to experience it  
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Astral Serpent

Huge Dragon, chaotic neutral

Armor Class 18 (natural armor)
Hit Points 157 (15d12 + 60)
Speed 60ft., swim 40ft.


20 (+5)


16 (+3)


18 (+4)


16 (+3)


18 (+4)


12 (+1)

Saving Throws Strength +9, Wisdom +8
Skills Arcana +7, Perception +8
Damage Resistances Force
Damage Immunities Poison
Condition Immunities Poisoned, Restrained
Senses Darkvision 120ft., Passive Perception 18
Languages Common, Draconic, Primordial
Challenge 10 (5900 xp)
Magic Resistance. The Astral Serpent has advantage on saving throws against spells and other magical effects.   Innate Spellcasting. The Astral Serpent’s spellcasting ability is Wisdom (Spell save DC 18, +8 to hit with spell attacks). The Astral Serpent can innately cast the following spells, requiring no material components.   At will: Detect Magic   3/day each: Dispel Magic, Shield, Teleportation Circle   1/day each: See Invisibility, Etherealness, Plane Shift


Multiattack. The Astral Serpent makes one Bite attack and one Constrict attack.   Bite. Melee Weapon Attack: +9 to hit, reach 10ft., one target. Hit: 12 (2d6+5) Piercing damage plus 7 (2d6) Poison damage..   Constrict. Melee Weapon Attack: +9 to hit, reach 15ft., one target. Hit: 18 (2d12+5) Bludgeoning damage. The target is Grappled (escape DC 19). Until this grapple ends, the creature is Restrained and the Astral Serpent can’t constrict another target.   Banishing Grasp. The Astral Serpent attempts to send one creature they have Grappled to another plane of existence. The target must make a Charisma saving throw (DC 18). On a failed save the target is sent to a harmless demiplane for the next minute. While there, the target is incapacitated. At the end of each of their turns, the creature has to make a Charisma saving throw. On a successful save, they escape the demiplane. When they escape the demiplane, a creature reappears in the space they left or in the nearest unoccupied space if that space is occupied.

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