Erdtree

Biodata

Power Progression

Mu En’s growth depends on Rune reserves, acquired laws, and newly developed bodies rather than a single named cultivation ladder 5 215.

Background / History

Human Life and Transmigration

Mu En was an ordinary modern human who livestreamed an all-achievements speedrun of Elden Ring. After sudden chest pain and a blackout, he glimpsed several possible destinations and chose the apparently peaceful forest. He arrived there as an Erdtree rather than a human 1.

His new body required neither sunlight nor ordinary nutrients, but the poisoned land forced him to expend Runes simply to survive. He initially mistook his surroundings for the Lands Between. Meeting Nausicaä revealed that he had instead arrived in the Valley of the Wind 1 2.

Establishing the Valley’s Faith

Mu En offered Nausicaä purification power in exchange for helping spread faith in gold, while assuring her that he would not demand her personal belief. He demonstrated the Law of Regression by cleansing the surrounding forest, soil, fungi, and flames. Nausicaä then agreed to become one of his people 2.

The valley’s food shortage gave him a practical route to gaining followers. With Nausicaä and Beruto, he used accelerated crop growth to address the famine. Their planned annual Festival of Grace, scheduled for September first, combined public miracles with rewards for outstanding contributors 9 14 28.

At the celebration, Nausicaä credited him with the valley’s purification, food, and rescue from fire. Mu En healed the assembled villagers and transformed an empty field into a vegetable garden. The resulting faith gave him a stable foothold and enabled the Stone Platform to form 37 38.

Blessed Warriors and Territorial Growth

Mu En’s blessings developed into a military and administrative system. Yupa initially rejected his offer of power and longevity because he suspected a hidden cost, but later led Blessed warriors against sand bandits. Their rescue and resettlement efforts brought 174 refugees into the valley 23 53 69.

Ohara’s execution demonstrated that the Erdtree could revoke its gifts as well as grant them. Mu En used the event to test Divine Descent and Erdtree Burial, establish divine authority, and discourage unrest among residents and refugees. He nevertheless judged the Runes recovered from a gifted person a poor exchange for that person’s life 65 66.

As the population expanded, Mu En supported housing, weapons production, and research into industrial uses of incantations. Gol’s craftspeople developed Golden Power Hammer, while Mu En created Wrath from Afar 69 72 84.

Expansion into the *Castle in the Sky* World

Mu En entered another world through the Golden Seed and recruited Pazu, Sheeta, and Dola’s pirates. When Dola attempted to secure control over the children, he immobilized her through her blessed Runes and declared that his people were equal 99 100 102.

The seed subsequently rooted in Valley Town and grew into a giant Erdtree. Mu En healed the townspeople, gained access to Volucite energy, and recruited local workers and soldiers. He later entrusted Muska with the Golden Realm Plan: turning the Northern Kingdom into the Erdtree’s kingdom 105 106 113 117 127 128.

After creating a mobile body, Mu En changed his plans and set out for Laputa. He protected the Goliath through the Dragon’s Nest, reached the floating city, and confronted Astel, treating the battle as an opportunity to test his avatar and develop practical command of his powers 211 213 225 231.

Golden Sect and Erdtree Alliance

In Pejite, Mu En instructed Kamlin to recruit discreetly through healing. The Golden Sect subsequently defeated gangs exploiting refugees, organized treatment and paid work, and began rebuilding the shantytown as an outer city 135 175.

At Mining Town, Nausicaä borrowed his authority through Divine Descent to heal survivors and empower rescuers. She then promoted cooperation among the surrounding nations, eventually securing the Erdtree Alliance under the Valley of the Wind’s leadership 173 198.

Mu En regarded technological access, blessings, and improved living conditions as stronger long-term bonds than a signed charter. By the time he returned his attention to the Castle in the Sky world, Nausicaä and the Blessed’s mental network were overseeing the alliance’s development 198 210.

Appearance

• Original body: A small tree resembling liquid gold, initially more than twice a person’s height but under four meters tall. Golden motes fall from its branches and illuminate the surrounding clearing 1.
• Main-body composition: A crystalline mimic, unlike the living Minor Erdtree he later grows in Valley Town 106.
• Valley Town tree: More than three hundred meters tall, with an aboveground trunk over fifty meters in diameter. Roots over ten meters thick descend into the canyon, while underground roots spread across a radius exceeding ten kilometers 105.
• Mature canopy: Described as three hundred meters across, large enough to shade a town. Its released vitality makes nearby vegetation exceptionally lush 211.
• Mobile avatar: A slender, faceless figure over two meters tall, formed from intertwined golden branches, crystal, and light. A crown of thorns and tender twigs replaces facial features; a tiny crystal Erdtree rests within its hollow rib cage 211.
• Spiritual manifestation: An immense radiant tree rooted in the void, with a crown whose full extent is difficult to perceive 191.

Personality

Mu En’s inner voice retains the humor, profanity, and game references of his human life. He consciously separates this private manner from his public presentation, adopting a majestic voice and measured behavior when dealing with potential believers. Most followers consequently know him as a mysterious, powerful, benevolent god 1 92 99.

He is pragmatic about faith: solving hunger, healing injuries, and providing security both help people and sustain his existence. He also regards kindness backed by enforceable punishment as an effective way to maintain loyalty. His treatment of Dola illustrates both sides—he accepts her service, but immediately stops her attempt to dominate fellow subjects 9 100.

His egalitarianism allows useful recruits to join regardless of their past, provided they have not harmed his people and obey his rules thereafter. This does not make him indiscriminately permissive; he supports severe punishment and the dismantling of entrenched privilege 65 115.

He retains personal affection and ethical limits. Although feeding Sheeta’s Volucite to the Fallingstar Beast could accelerate its growth, he refuses to seize a child’s family heirloom. Creating a mobile avatar also restores emotions and sensations that had dulled during his stationary existence 212 215.

Abilities & Skills

Golden Runes and Law Assimilation

Golden Runes constitute Mu En’s soul and the essence sustaining his existence. His nature as the Elden Ring is broader than the Golden Order, which is only his principal outward manifestation 99 215.

• Converts faith and suitable natural energy into Runes; blessed recipients also generate Runes that feed back to him 1 106.
• Grows stronger as his Rune reserves increase; Erdtree’s Favor does not directly accelerate his own growth 5.
• Exercises absolute control over Runes originating from his blessings 66.
• Can acquire other laws by establishing connections with their associated beings or concepts, as demonstrated by golden threads and gravity 215.
• Can reshape established incantation models or create new applications, although experimentation may consume enormous energy 84 211.

Blessings and the Blessing Link

Blessed Dew transforms recipients toward a higher form of life, strengthening their bodies and souls 3 13 66.

• Grants strength, longevity, heightened senses, and increased intelligence 99.
• Enables trained recipients to handle heavy weapons, absorb recoil, and aim beyond ordinary human visual range 59.
• Erdtree Marks authorize corresponding incantations and allow their casting methods to be transmitted mentally 4.
• The Blessing Link supports communication, observation, instruction, and coordination of distant followers 4 84 135.
• Divine Descent temporarily increases a Blessed recipient’s strength and allows Mu En’s authority to operate through them 66 173.
• Conventional bestowal of Blessed Dew requires the recipient to be beneath the Erdtree or a Divine Descent ritual to be performed 204.

Purification and Healing

Offensive Incantations

• Wrath of Gold: Releases a destructive shockwave. Early on, Mu En estimates that full output could flatten the surrounding forest but would exhaust him fatally 5.
• Wrath from Afar: Converts the shockwave into a ranged blast; used to injure and drive away the Fallingstar Beast before his tree avatar matures 84 99.
• Order’s Blade: Creates a shapeable blade of light capable of cutting through iron 102.
• Golden Power Hammer: Developed by Gol’s Blessed craftspeople from Wrath of Gold; used for powerful close-range blows and breaching heavy obstacles 84 179.
• Litany of Proper Death: Supplies the energy for a spear of light during Mu En’s confrontation with Astel 231.

Defensive Incantations

• Shield of Immutability / Immutable Shield: Creates a golden barrier against physical and energy impacts. Mu En’s modified version repairs itself throughout its duration 5 102.
• Large-scale shielding: Protects the Goliath from lightning, hail, and violent air currents inside the Dragon’s Nest 225.
• Erdtree’s Protection: Raises elemental resistance, physical strength, and defense 5 102.

Aspects of the Crucible

Mu En uses Crucible power both to construct beasts and to enhance living recipients 123 125.

• Produces fantastic forms resembling lions, werewolves, griffins, wyverns, and angels 123.
• Constructed beasts lack self-awareness and ranged attacks, and remain confined to his root-covered territory 125.
• Its greater value lies in granting specialized strength and vitality to followers 125.
• Empowers Mining Town’s rescuers to lift rubble; Mu En also manifests enormous golden-red wings before fighting Astel 173 231.

Golden Threads and Blessed Golden Apples

Golden mycelium can carry Mu En’s consciousness, reshape wooden bodies, and draw vitality from other plants 203 211.

• Experimental assimilation kills several plants, leaving only golden threads tracing their former shapes 203.
• Supports avatar construction and offers a means of rapidly expanding his domain 204 211.
• Produces golden apples on kiwi plants; eating them permanently grants a blessing 204.
• Apples can be stored and distributed, allowing blessings to spread beyond the normal location restrictions of Blessed Dew 204.
• Mu En associates this power with the unusual fruit seed he absorbed early in his life as an Erdtree 204 215.

Erdtree Burial and Rune Control

Mu En can reclaim blessed Runes directly, bypassing the rituals required by a mere spokesperson of the Golden Order 66.

• Can immobilize recipients through the Runes inside their bodies, as demonstrated against Dola 100.
• Forced Rune withdrawal can complete Erdtree Burial, harvesting a recipient’s accumulated energy 66.
• The Valley of the Wind’s existing cycle of death prevents him from simply reproducing the Lands Between’s burial system unchanged 66.
• Ohara retains some awareness after burial, but not a complete self. Mu En concludes that preserving full consciousness requires a sufficiently powerful soul 66 88.
• Blessing pacts can also punish attempted betrayal or disclosure with a terrifying experience of death 117.

Domains and Avatars

• Stone Platform: An internal space within his trunk and soul, resembling the battlefield where he fought the Elden Beast in his previous life. It contains the Golden Seed and serves as a repository for Ohara’s soul 38 66.
• Mental network: Mu En selects the Stone Platform as the foundation for a shared Blessed space; the resulting network later assists the alliance’s workers and administration 204 210.
• Minor Erdtree: Its living structure permits controlled movement of branches and roots and extraction of Volucite energy 106.
• Mobile Erdtree Avatar: Built from roots denser than steel, Golden Runes, and golden mycelium. The first attempt costs energy sufficient to create hundreds of Blessed 211.
• Simultaneous embodiment: Mu En can perceive the mobile body and nearby tree as different expressions of himself rather than abandoning one for the other 212.

Law of Gravity

Blessing the Fallingstar Beast connects Mu En to its law; his access strengthens as the beast develops 110 215.

• Creates Gravity Spheres several meters across and large stone spikes 215.
• Allows his avatar to float and fly freely 215.
• Remains incomplete: attempted gravity beams fail, and controlled gravitational distortion cannot yet be sustained outside his body 215.
• Offers little advantage against Astel, an incarnation of the Law of Gravity 231.

Limitations & Vulnerabilities

• Fire: His initial sapling body is especially vulnerable to burning 1.
• Energy dependence: Large-scale miracles can consume dangerous amounts of Runes; early survival requires strict budgeting 1 5 38.
• Rooted main body: Cannot walk or wield its branches like a treant. Mu En also loses ordinary animal senses and no longer sleeps 5.
• Avatar range before mobility: The Minor Erdtree’s controllable roots provide only a limited operating area, prompting his search for a separate mobile body 203.
• Knowledge versus mastery: Unlocking an ability does not guarantee practical proficiency. He seeks combat experience to improve his use of both Golden Order incantations and gravity 231.

Relationships

• Nausicaä — First golden subject and principal spokesperson in the Valley of the Wind. She helps establish his faith, advises him on divine authority, and leads the Erdtree Alliance 3 66 87 198.
• Beruto — Farmer and early Blessed responsible for applying Erdtree’s Favor to food production and training agricultural workers 13 14 31.
• Gol — Early beneficiary of the golden fruit and leader of craftspeople researching incantations and industrial applications 84 204.
• Yupa — Initially distrusts Mu En’s offer, then becomes a commander and tactical instructor for the Blessed warriors 23 53 179.
• Kamlin — Field representative whose healing and refugee relief efforts expand the Golden Sect’s influence in Pejite 135 175.
• Pazu and Sheeta — Young followers rescued and blessed in the Castle in the Sky world. Sheeta carries the Golden Seed before it takes root; both accept Mu En’s mobile form as the same god they already know 99 105 213.
• Dola — Pirate recruit, later elevated to Golden Folk. Mu En disciplines her attempt to control other followers, then relies on her recruitment skills and political judgment 100 115 117.
• Muska — Blessed recruit entrusted with the Golden Realm Plan despite Dola’s concern over his ambition and intelligence-service background 127 128.
• Fallingstar Beast / Niuniu — Former opponent subdued and blessed by Mu En. Its development strengthens his gravity abilities, giving him an incentive to support its evolution 110 215.
• Sea of Corruption — Initially feared as a potential enemy; later acknowledges his power, asks for help against the soul-devouring Void, and awakens a dormant ability within him 9 191.
• Ohara — Subject of forced Erdtree Burial whose surviving soul becomes Mu En’s experimental sample at the Stone Platform 66 88.

Notable Quotes

“Lost maiden, there is no need to struggle over this. I will not demand your faith.” 2

“Becoming one of the Erdtree’s people means following the Erdtree’s rules. As long as they stay within those bounds, I will treat them all equally, regardless of their past.” 115

“Rise, my people.” 211

Trivia

• The author explicitly states that Mu En will not turn back into a human; his humanoid avatar remains a body of branches, crystal, and light 92 211.
• The novel’s Erdtree and related powers are a fan-created system inspired by Elden Ring, not a strict reproduction of its lore 92.
• Mu En’s proposed name for the Festival of Grace was the “Model Worker Commendation Conference,” which Nausicaä and the elders found unsuitable 28.
• The author identifies the mobile avatar’s visual inspiration as the Night Giant from Nightreign 211.