Ancient Sea Zaragon (Original & Humanoid Form)

SPECIAL TRAITS - ORIGINAL FORM ONLY

Self Contained Ecosystem with Natural Camouflage. The Ancient Sea Zaragon whole body is covered in a natural ecosystem combined of several types of natural materials (such as rock, sand, soil, vegetation, etc...) and can possibility have any creature of huge to small in size, living in coexistence and/or form a symbiotic relationship. However, any creature that does not reside in this ecosystem is considered to be under difficult terrain movement. This ecosystem also has another benefit, if the Ancient Sea Zaragon remains motionless, or if its on the water surface, it can have a slight drift. Its natural ecosystem acts like some sort of a camouflage that gives off a false appearance that is indistinguishable from a typical island (water) or a blended piece of difficult terrain (land).

Siege Monster. The Ancient Sea Zaragon does double damage to objects and structures.

Symbiotic Relationship (1/Long Rest). The Ancient Sea Zaragon can as a bonus action, once activated, it can send out a call for help. If available, any of the creature(s) that either lives in coexistence or have a symbiotic relationship with the Ancient Sea Zaragon comes to its aid. The creature has a challenge rating of up to either half or at the level of the lowest party member (DMs Choices). By rolling (1D6), determines the size and amount of available creature(s), that join the encounter at the start of a new round, the results are as follows: (1): One huge size creature is available, (2): Two large size creatures available, (3): Three medium size creatures available, (4): Four small size creatures available, (5 - 6): No creatures available.

SPECIAL TRAITS - HUMANOID FORM ONLY

Linguistics. The Ancient Sea Zaragon is fluent in several languages and limited in the remaining. Fluent languages include Draconic, Aquan, Common, and 4 others (at DMs discretion). 

 SPECIAL TRAITS - ANY FORM

Naturally Armored. The Ancient Sea Zaragon ignores any insufficient damage done to its fortified shell/body and armored hide/skin (such as the head, tail, limbs/flippers, etc...). Any attack that does not do a minimal of 15 (1D20+5) points of damage or more of a creature's single attack action, or 30 (2D20+9) points of damage or more of a creature's turn, becomes ignored. This minimal damage points can be set for either the entire encounter or adjusted per new round. By attacking any vital areas (such as eyes, ears, maw/beak, inside (stomach), etc...) bypasses this trait, but the attack is rolled at disadvantage.

Amphibious. The Ancient Sea Zaragon can breathe air and water.

Magic Weapons. The Ancient Sea Zaragon weapon attacks are considered magical.

Unusual Nature. The Ancient Sea Zaragon doesn't require food or drink.

Shapechanger (at will). The Ancient Sea Zaragon can use its bonus action, once activated, it can magically transform from one form to the other and vise versa. If transforming into a humanoid, the Ancient Sea Zaragon can choose any humanoid race (any race that it had an interaction with in its life time) of small to medium in size and all while retaining its game statistics (other than its size and some abilities/actions). Any equipment that the Ancient Sea Zaragon was previously wearing or carrying before the transformation back to its original form becomes absorbed or borne by the new form, and vise versa. This transformation ends when another bonus action is used to end it or (at DMs discretion) can either keep the same form or change back to its original if reduced to 0 hit points, or becomes dead.

Legendary Resistance (3/Day). The Ancient Sea Zaragon, if it fails any Saving Throw, it can choose to succeed it instead.

Blessing of the Sea (1/Long Rest). The Ancient Sea Zaragon can as a bonus action, once activated, if it is reduced to 0 hit points, it current hit point total instead resets to 500 hit points, and it recharges its breath weapon(s). Additionally, the Ancient Sea Zaragon can now use the options in the "Mythic Actions" section for 1 hour. Award to the party is granted an additional 90,000 XP (180,000 XP Total) for defeating the Ancient Sea Zaratan-Dragon after its Blessing of the Sea activates.

ACTIONS - ORIGINAL FORM ONLY

Multiattack. The Ancient Sea Zaragon can make one Flipper Fling or Innate Spellcasting attack and three attacks: one Venomous Bite or Spike/Club Tail attack, and two Flipper with Claws or two Spit Ball/Object attacks. The Ancient Sea Zaragon can replace its two Flipper with Claws or Spit Ball/Object attacks for an attempt to use the swallowed/consumed action.

Innate Spellcasting. The Ancient Sea Zaragon is a level 20 innate spellcaster. Its innate spellcasting ability is Intelligence (Spell Save DC 24, +16 to hit with spell attacks). The Ancient Sea Zaragon has the following known spells from the Wizard, Sorcerer, and Cleric classes, and can innately cast the following spells, requiring only verbal components:
At Will (any level): Fire Bolt, Chaos Bolt, Witch Bolt, Lightning Bolt, Message
5/Day (any level): Control Weather, Control Water, Fireball, Poison Spray, Fog Cloud, Guiding Bolt, Magic Missile
3/Day (any level): Meteor Swarm, Counterspell, Alter Self, Polymorph
1/Day (any level): Dispel Magic, Sunburst

Flipper Fling. The Ancient Sea Zaragon can fling one small to huge creature or object that is thrown up to 40 ft. As it strikes any surface, it takes 3 (1D6) Bludgeoning damage for every 10 ft. forward the target is thrown. The thrown creature is also knocked prone on impacted. If the creature is thrown at another creature, that creature must succeed a DC 15 Dexterity Saving Throw or take the same damage and be knocked prone as well.

Venomous Bite. Melee Weapon Attack: +18 to hit, reach 10 ft., one target. Hit: 23 (2D12+10) Piercing damage plus 22 (4D10) Poison damage, and the target is grappled (escape DC 20 Strength (Athletics) or Dexterity (Acrobatics) Check). Until the grappled ends, the target is restrained and the Ancient Water Zaragon can't bite another target. 

Swallowed/Consumed. The Ancient Sea Zaragon can make one more bite attack against a huge or smaller creature that is already grappled in its mouth. If the attack hits, the target takes 23 (2D12+10) Piercing damage plus 22 (4D10) Poison damage, and is swallowed/consumed, and the grappled ends. A swallowed/consumed creature is blinded and restrained, but has total cover against attacks and effects outside the Ancient Sea Zaragon. All swallowed creatures takes 27 (6D8) Acid damage at the start of each of the Ancient Sea Zaragon's turns while inside. The Ancient Sea Zaragon can have any number of creatures swallowed/consumed at once. If the Ancient Sea Zaragon takes 20 (1D20+10) damage or more on a single attack from any creature inside it or 41 (2D20+20) damage or more on a single turn. Theses minimal damage points can be set for either the entire encounter or adjusted per round, at the start of the round. If the required amount of damage is done, then the Ancient Sea Zaragon must succeed on a DC 28 Constitution Saving Throw at the end of that turn or regurgitate all swallowed creatures, which fall prone in a space within 10 ft. of the Ancient Sea Zaratan-Dragon. If the Ancient Sea Zaratan-Dragon dies, all swallowed/consumed creatures are no longer restrained and can escape by using 30 ft. of movement, exiting prone. However, all creatures that are swallowed/consumed are automatically regurgitated if the Ancient Sea Zaragon uses its Shapechanger or any spells that can transform its size smaller than its original.

Spike/Club Tail. Melee Weapon Attack: +18 to hit, reach 15 ft., one target. Hit: 23 (2D12+10) Bludgeoning damage plus 22 (4D10) Slashing damage. If the target is a creature, it must succeed on a DC 20 Strength Saving Throw or be pushed up to 20 ft. away from the Ancient Sea Zaragon and knocked Prone.

Flipper with Claws. Melee Weapon Attack: +18 to hit, reach 15 ft., one target. Hit: 23 (2D12+10) Slashing damage plus 22 (4D10) Poison damage.

Spit Ball/Object- Fire & Water. Range Weapon Attack: +10 to hit, range 60 ft/240 ft., one target. Hit: 23 (2D12+10) Fire damage plus 22 (4D10) Bludgeoning damage.

ACTIONS - HUMANOID FORM ONLY

Multiattack. While the Ancient Sea Zaragon can make one spellcasting attack and three attacks: one bolt of the sea, and two trident of the sea or crossbow of the sea attacks.

Spellcasting. While the Ancient Sea Zaragon is in its humanoid form, it is a level 20 spellcaster. Its spellcasting ability is Intelligence (spell save DC 24, +16 to hit with spell attacks). The Ancient Sea Zaragon has the following Wizard, Sorcerer, and Cleric class spells known, requiring only verbal components. All spell slots are regained when completing a long rests. 
Cantrips (at will): Fire Bolt, Message, Prestidigitation, Chill Touch, Frostbite, Mending
1st level (4 slots): Chaos Bolt, Magic Missile, Sleep, Witch Bolt
2nd level (3 slots): Alter Self, Aganazzar's Scorcher, Scorching Ray, Shatter
3rd level (3 slots): Blink, Counterspell, Lightning Bolt, Fireball
4th level (3 slots): Banishment, Blight, Ice Storm, Polymorph
5th level (3 slots): Flame Strike, Mass Cure Wounds, Cone of Cold
6th level (2 slots): Chain Lightning, Disintegrate, Sunbeam
7th level (2 slots): Regenerate, Teleport, Fire Storm
8th level (1 slots): Telepathy, Sunburst, Dispel Magic
9th level (1 slots): Meteor Swarm, Mass Heal, Mass Polymorph

Bolt of the Sea. Melee or Ranged Spell Attack: +18 to hit, reach 5 ft., range 600 ft., one target. Hit: 36 (4D12+10) damage of one of the following types (Ancient Sea Zaragon's choice): Acid, Cold, Fire, Force, Lighting, Radiant, Necrotic, Psychic, or Thunder.

Trident of the Sea. Melee or Ranged Weapon Attack: +18 to hit, reach 5 ft., or 20 ft./60 ft., one target. Hit: 23 (2D12+10) Piercing damage plus 22 (4D10) damage of one of the following types (Ancient Sea Zaragon's choice): Acid, Cold, Fire, Force, Lighting, Radiant, Necrotic, Psychic, or Thunder or 33 (3D12+10) Piercing damage plus 22 (4D10) damage of one of the following types (Ancient Sea Zaragon's choice): Acid, Cold, Fire, Force, Lighting, Radiant, Necrotic, Psychic, or Thunder, if used with two hands to make a melee attack.

Crossbow of the Sea. Range Weapon Attack: +10 to hit, range 80 ft./320 ft., one target. Hit: 23 (2D12+10) Piercing damage plus 22 (4D10) damage of one of the following types (Ancient Sea Zaragon's choice): Acid, Cold, Fire, Force, Lighting, Radiant, Necrotic, Psychic, or Thunder.

ACTIONS - ANY FORM

Breath Weapons (Recharge 5-6). The Ancient Sea Zaragon can use one of the following breath weapons.

Steam/Fire Breath. The Ancient Sea Zaragon exhales scalding steam or Fire in a 300 ft. (original form) or 60 ft. (humanoid form) cone. Each creature in that area must make a DC 18 Constitution Saving Throw, taking 55 (10D10) Fire damage on a failed save, or half as much damage on a successful one. Being underwater doesn't grant resistance against this damage.

Electrified Water Breath. The Ancient Sea Zaragon exhales electrified water in a 300 ft. (original form) or 60 ft. (humanoid form) cone. Each creature in that area must make a DC 18 Constitution Saving Throw, taking 55 (10D10) Lightning damage on a failed save, or half as much damage on a successful one.

Iced shards & Water Breath. The Ancient Sea Zaragon exhales iced shards & water in a 300 ft. (original form) or 60 ft. (humanoid form) cone.. Each creature in that area must make a DC 18 Constitution Saving Throw, taking 55 (10D10) Cold damage and pushed back 20 ft. on a failed save, or half as much damage on a successful one.

BONUS ACTIONS - ORIGINAL FORM ONLY

Strong Currents/Undertow or Terrain. The Ancient Sea Zaragon, can after moving 30 ft. or more, causes an area of 60 ft. radius centered on itself to become difficult terrain. If located in water, the Ancient Sea Zaragon creates a strong current or undertow, causing difficult terrain for 1 min, even if the creature has swimming speed. If located on land, the Ancient Sea Zaragon creates or destroys the terrain surrounding itself, causing difficult terrain to be permanent.

BONUS ACTIONS - HUMANOID FORM ONLY

Disarm Weapon/Item. The Ancient Sea Zaragon can attempt to preform a Disarm of any weapon or item that is in the target's grasp. The attacker makes an attack roll contested by the target's Strength (Athletics) Check or Dexterity (Acrobatics) Check. If the attacker wins the contest, the attack caused no damage or other ill effect, but the defender drops the weapon or item. The attacker has disadvantage on its attack roll if the target is holding the weapon or item with two (or more) hands.

BONUS ACTIONS - ANY FORM

Shapechanger. Whether the Ancient Sea Zaragon is in its original or humanoid form, it can magically transform into any humanoid race or revert back to its original form, all while retaining the game statistics, other than size and some abilities/actions.

REACTIONS - ORIGINAL FORM ONLY

Enraged Defense. The Ancient Sea Zaragon, if attacked first during the encounter, all creatures within 120 ft. radius must make a DC 18 Constitution Saving Throw, taken 23 (2D12+10) Force damage.

REACTIONS - HUMANOID FORM ONLY

Parry. The Ancient Sea Zaragon, once per turn, it can add +6 to its AC against one melee attack that would hit it. To do so, the Ancient Sea Zaragon must see the attacker and be wielding a melee weapon.

REACTIONS - ANY FORM

Opportunity Attack. The Ancient Sea Zaragon can take one melee attack, Flipper with Claws (original form) or Trident of the Sea (humanoid form) at any creature that moves outside of its melee range.

The Ancient Sea Zaragon can take 3 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at the end of another creature's turn. The Ancient Sea Zaragon regains spent legendary actions at the start of its turn.

LEGENDARY ACTIONS - ORIGINAL FORM ONLY

Move or Attack (Costs 1 Action). The Ancient Sea Zaragon can if it chooses to either move up to half of its normal speed or it can make one Flipper with Claws or Spit Ball/Object attack.

Shell Retract or Emerge (Costs 2 Actions). The Ancient Sea Zaragon can choose to either retract or emerge from its shell. While the Ancient Sea Zaragon is retracted in its shell, it has resistance to all damage types and it is restrained until it emerges from its shell. While retracted in the shell, the next time it takes a legendary action, it must take a revitalize or emerge action.

Revitalize (Costs 2 Actions). The Ancient Sea Zaragon can use this option only if it is retracted in its shell. It regains 52 (5D20) hit points. The next time it takes a legendary action, it must take its emerge action. 

Gift of Water, Physically Generate (Costs 3 Actions). The Ancient Sea Zaragon is in any water that is large and deep enough to fit itself in. It can use its body to create a whirlpool by submerging below the waterline or tidal wave/tsunami by breaching above the waterline. If above the waterline, it can choose to submerge beneath the waves causing a whirlpool, centered on its previous location. If below the waterline, it can choose to breach above the waves causing either a tidal wave or tsunami to spread out in a radius. See Whirlpool in Control Water and Tidal Wave or Tsunami for information.

LEGENDARY ACTIONS - HUMANOID FORM ONLY

Move or Attack (Costs 1 Action). The Ancient Sea Zaragon can if it chooses to either move up to half of its normal speed or it can make one Trident of the Sea or Crossbow of the Sea attack.

Weapon Slam (Costs 2 Action). The Ancient Sea Zaragon can take its Trident of the Sea, and slam it into the ground, releasing an explosive shockwave. Each creature within 20 ft. radius of the Ancient Sea Zaragon must succeed a DC 18 Dexterity Saving Throw or take 32 (4D10+10) Force damage, and be knocked prone. Half damage on success and the creature is not knocked prone.

Self Heal (Costs 2 Action). The Ancient Sea Zaragon can regain 52 (5D20) hit points. 

Gift of Water, By Magic (Costs 3 Actions). The Ancient Sea Zaragon can use its magic ability to create a whirlpool, tidal wave or tsunami. See Whirlpool in Control Water and Tidal Wave or Tsunami for information.

If the Ancient Sea Zaragon's Blessing of the Sea trait has been activated in the last hour, it can use the options below as legendary actions.

MYTHIC ACTIONS - ANY FORM

Booming Voice (Costs 1 Action). The Ancient Sea Zaragon can lets out a loud and painfully intense sound. Each creature within a 100 ft. of the Ancient Sea Zaragon must make a DC 20 Constitution Saving Throw, taking 24 (7D6) Thunder damage, on a failed save, half damage on a successful one.

Boiling Aura (Costs 2 Actions). The Ancient Sea Zaragon can radiate intense heat. Until the start of the Ancient Sea Zaragon's next turn, whenever a creature starts its turn within 20 ft. of the Ancient Sea Zaragon, that creature must succeed on a DC 24 Constitution Saving Throw or take 40 (9D8) Fire damage. Being underwater doesn't grant resistance against this damage.

Armor of Storms (Costs 3 Actions). The Ancient Sea Zaragon can cause lighting to be temporarily surrounding the Ancient Sea Zaragon, and it gains 40 temporary hit points at the start of its next turn. Until all these temporary hit points are gone, any creature that touches the Ancient Sea Zaragon or hits it with a melee attack takes 26 (4D12) Lightning damage.