Efnysien “the Unpredictable, the Vengeful Destroyer”

Efnysien is a tall and muscular figure with a rugged, weathered appearance. He has sharp, angular features and piercing eyes that seem to burn with an intense inner fire. His long, dark hair is usually worn in a messy, unkempt style, and he bears numerous scars and wounds from his battles and adventures. He carries himself with a sense of confidence and power, and his movements are graceful and fluid, like a predator stalking its prey.

• Alias – Efnysien the Unpredictable
• Gender – Male
• Race – Welsh demigod
• Occupation – Warrior, Trickster
• Religion – Celtic Mythology
• Allies – His brothers, Matholwch, Branwen
• Enemies – Bran the Blessed, Irish warriors
• Abode/Base of operations – Various locations across Wales
• Nationality – Welsh
• Languages – Welsh, English
• Alignment – Chaotic Evil
• Affiliation(s) – Welsh gods, Celtic pantheon
• Significant others – None

Efnysien is a complex character in Welsh mythology whose story is one of destruction, conflict, and ultimately, redemption. He is a member of the Children of Dôn, a group of powerful and mystical beings who play a prominent role in Welsh folklore. He is known for his fiery temperament and his tendency to cause chaos wherever he goes. Despite this, he is a deeply nuanced character whose motivations and desires are difficult to fully understand.

Efnysien’s story begins with a dispute between two kings, Matholwch of Ireland and Bran of Britain. Bran marries Matholwch’s sister, Branwen, in an attempt to forge a peace between the two kingdoms, but Efnysien’s jealousy and pride leads him to mutilate Matholwch’s horses and insult his guests. This sets off a chain of events that leads to war between Britain and Ireland, with Efnysien at the center of the conflict.

Throughout the war, Efnysien’s actions are unpredictable and often destructive. He single-handedly destroys the Irish army’s food and water supplies, and later sacrifices himself by jumping into a fire with Matholwch’s son, Gwern, killing them both. Despite his chaotic behavior, He is a complex character who is driven by a desire for recognition and respect.

His motivations are deeply rooted in his own insecurities and feelings of inadequacy. He feels overshadowed by his more powerful and respected brothers, and his desire for recognition drives him to act out in destructive ways. Despite his destructive tendencies, Efnysien is a sympathetic character whose flaws are a result of his own internal struggles.

His story is filled with other important characters, including his brothers, Matholwch, Bran, and Branwen. Each of these characters plays a significant role in Efnysien’s story and contributes to his complex motivations and desires. Ultimately, his story is one of redemption, as he sacrifices himself to save his brothers and achieve the recognition he has always desired. Efnysien is a complex and fascinating character whose story is a testament to the richness and depth of Welsh mythology.

Efnysien, The Vengeful Destroyer

Medium humanoid (half-giant), chaotic evil

Armor Class: 18 (natural armor)

Hit Points: 400 (32d10 + 192)

Speed: 40 ft.

STR	DEX	CON	INT	WIS	CHA
30 (+10)	14 (+2)	22 (+6)	10 (+0)	16 (+3)	8 (-1)

Skills: Athletics +19, Intimidation +9, Perception +16

Damage Immunities: poison

Condition Immunities: poisoned

Senses: darkvision 120 ft., passive Perception 26

Languages: Giant

Challenge Rating: 25 (75,000 XP)

Actions

Multiattack. Efnysien can make three slam attacks.

Slam/mace. Melee Weapon Attack: +19 to hit, reach 10 ft., one target. Hit: 35 (5d10 + 10) bludgeoning damage.

Thunderous Roar (Recharge 5-6). He emits a thunderous roar that can be heard up to 300 feet away. Each creature within 60 feet of Efnysien must succeed on a DC 25 Constitution saving throw or take 70 (20d6) thunder damage and be deafened for 1 minute. On a successful save, the creature takes half as much damage and isn’t deafened.

Stomp. He slams its foot on the ground, causing an earthquake in a 60-foot radius. Each creature on the ground within that area must succeed on a DC 25 Strength saving throw or be knocked prone. Efnysien can then move up to its speed without provoking opportunity attacks.

Throw Object. He picks up a Large or smaller object within 60 feet of it and throws it at a creature. The object must weigh no more than 500 pounds. Ranged Weapon Attack: +19 to hit, range 60/240 ft., one target. Hit: 55 (10d10) bludgeoning damage.

Reactions

Counterattack. When a creature within 10 feet of Efnysien hits it with a melee attack, He can use its reaction to make a slam attack against that creature.

Legendary Actions

Efnysien 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. He regains spent legendary actions at the start of its turn.

Slam. He makes one slam attack.

Move. He moves up to its speed without provoking opportunity attacks.

Thunderous Roar (Costs 2 Actions). He uses its Thunderous Roar.

Lair Actions

On initiative count 20 (losing initiative ties), Efnysien takes a lair action to cause one of the following effects:

Earthquake. Efnysien slams the ground, causing an earthquake in a 120-foot radius. Each creature on the ground within that area must succeed on a DC 25 Strength saving throw or be knocked prone.

Summon Lesser Giants. Efnysien summons two Hill Giants to fight alongside it. The Hill Giants act on Efnysien’s initiative count.

Tremor Sense. He can sense the presence of creatures within 120 feet of it that are in contact with the ground.

Regional Effects

The region containing Efnysien’s lair is warped by its magic, which creates the following effects:

• Destructive Tremors. The ground shakes and trembles, causing structures within 1 mile of Efnysien’s lair to become unstable. Buildings, bridges, and other structures have a 10% chance of collapsing each day.
• Giant’s Bane. Creatures within 5 miles of Efnysien’s lair that have the Giant type have disadvantage on attack rolls and saving throws.
• Seismic Activity. The region experiences frequent earthquakes, with tremors occurring every few hours. Creatures have disadvantage on Dexterity checks and Dexterity saving throws while in the affected area.

Equipment

Efnysien wields a massive mace made of dark iron that crackles with lightning. It also wears an enchanted belt that increases its Strength score by 4 and provides immunity to lightning damage.