Chastiefol

The is King's Sacred Treasure, and a holy weapon crafted from the Sacred Tree found only in the Fairy Realm.

Appearance
Chastiefol has ten different forms, but frequently appears as a mottled, green pillow that King carries with him. During combat, it can transform into a long, broad spear with two out-turned lugs at the base of the head, that forms a guard similar to that of a boar spear. Each of its forms also has a "true form" that King is able to unleash for even more power.

Regular Form
It is much stronger than steel and has mysterious qualities of the Sacred Tree, which King's ability, Disaster, draws out. It is capable of regenerating itself even after being split in two or in pieces. It has ten different forms and can be transformed from one to another at King's will.
 * Pillow: When not in battle, the spear remains in the form of a pillow. The pillow can also act as a shield.
 * King frequently utilizes this form, which is a long, broad spear, in conjunction with his levitation ability to perform basic ranged attacks. It acts as a homing-weapon, continuously following a dodging enemy and cornering them.
 * By controlling Chastiefol with his ability to levitate objects, King launches a multitude of attacks which rapidly swarm the enemy in all directions.
 * Chastiefol takes on the form of a large, stuffed bear by shape-shifting the moss that grows along its body. While in this form the moss body will parry any physical attack, but can also be directly controlled by King to fight or immobilize enemies with its four arms. Due to the high water concentration within the moss it is highly resistant to fire; however, because of this quality it bears a weakness against cold and freezing attacks. Additionally, the form's soft, fluffy body allows it to resist blunt force attacks.
 * This form of Chastiefol is a twin headed spear with a spearhead shaped like the claws of a crab. This form has the ability to petrify an individual whom it pierces, rendering them unmovable and immobilized as a statue even if they are still alive.
 * A gigantic shoot emerges from the earth, towering over enemies, as a flower bud blooms and shoots several projectiles that are capable of a great amount of destruction.
 * An army of small kunai-like spears are multiplied from one, their individual trajectories are controlled by King at will through simple motioning and gesturing of his hands.
 * A subsidiary technique of Increase, it focuses all of the small blades that comprise Chastiefol into a single downwards strike against an opponent.
 * Chastiefol transforms into a luminescent, ringed sphere that illuminates the surrounding area. It acts as a torch that allows the user to easily see in dark places.
 * A large barrier is formed around a person and is capable of withstanding even the most powerful attacks. The barrier is made of pollen from the Sacred Tree which have the capabilities of slowly healing and subsides the pain immediately.

Combined Techniques

 * A combined attack, in which while Diane throws a rock barricade the opponent, King attacks piercing his body with Chastiefol.

True Form
The is the complete form of Chastiefol achieved only when King draws out the true power of the Sacred Tree. It is activated with the command, after which King's body is flooded with magic from the Sacred Tree. The magical burden it puts on King is so great that his body cannot physically sustain the immense power and he is left exhausted and wounded. Releasing Chastiefol is also shown to cause King's power level to momentarily double that of an Albion. After obtaining his wings, King became able to accede to the true power of Chastiefol without any repercussion in his body.
 * The true first form of Chastiefol takes on the appearance of a great spear that dwarfs King in size. King utilizes this form by launching the spear at his opponent; creating an enormous, cross-shaped explosion upon contact.
 * King launches a multitude of attacks with Chastiefol which rapidly swarm the enemy in all directions.
 * King launches a powerful spinning attack with Chastiefol. Its power is able to eliminate multiple Albions in an instant.
 * King loads a lot of magical power into Chastiefol and throws it over his opponent from the sky.
 * In its true second form, Chastiefol appears as a muscular stuffed bear. Its strength and destructive capabilities are dramatically increased.
 * In its true form, Chastiefol takes on the appearance of a giant sunflower with spiked teeth surrounding the center of its mouth-like opening with roots that dwarf its original size. The flower charges up before sending hundreds among thousands of projectiles capable of creating a massive amount of destruction.
 * In its true fifth form, Chastiefol appears as an army of large kunai-like spears.
 * Chastiefol wraps itself around King's body in the form of an armor equipped with large gauntlets with long blades on the forearms.

Combined Techniques

 * A combined attack that involves using True Spirit Spear Chastiefol as the arrow and using Twin Bow Herritt as the bow, part of the aura surrounds Chastiefol. The attack damages the target both physically and mentally.
 * A triple combined attack in which King attacks the opponent with Chastiefol in his sixth form at the same time that Gowther creates many illusions of him to confuse the enemy and Diane uses her Drole's Dance to increase his power level.
 * King combines Chastiefol's Pollen Garden with Merlin's Perfect Cube and Elizabeth's Ark to imprison the opponent in a three degree containment field.

New True Form
After fully developing his wings and unlock his full potential, King acquired a, which appears larger and more powerful than its predecessor. King is also able to use multiple forms of his new Chastiefol at the same time, being able to use up to four. In return, each one's precision and power drop greatly.
 * The fully awakened first form of Chastiefol takes on the appearance of a great spear that taking the appearance of a large, long staff with a decorative flower designs, and a large blade within the flower that dwarfs King in it's sheer size.
 * King launches a multitude of attacks with Chastiefol which rapidly swarm the enemy in all directions.
 * King loads a lot of magical power into Chastiefol and throws it over his opponent from the sky.
 * In it's fully awakened second form, Chastiefol appears as a larger muscular stuffed bear with a multitude of arms, dramatically increasing its strength and attack capabilities. This form has enough strength to prevent Zeldris from attacking Merlin
 * The fully awakened fourth form of Chastiefol appears as a larger flower with a bulk and spiked body; its destructive power greatly increase.
 * In it's fully awakened fifth form Chastiefol Increase appears as a large array of double-edged blades with intricately designed handles that have more speed and power in them than it previously had.
 * A subsidiary technique, it focuses all of the blades that comprise Chastiefol into a single downwards strike against an opponent.
 * in it's eighth form, King's Pollen Garden has gained more power than before, with its true form appearing as a larger, more intricately patterned egg-shaped barrier capable of not only fully healing and containing itself around multiple people including a giant, but is capable of withstanding and defending against a massive and powerful attack from Mael, one of the four Archangels, who power is greatly enhanced by the power of his Commandments.

Gallery
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Trivia

 * Chastiefol is the first Sacred Treasure to be seen.
 * In the medieval French story, "Le Chevalier au Papegau", King Arthur's sword, Excalibur, is renamed as Chastiefol.
 * In old french, "chastiefol" means "[to] punish the fool(s)" or "fool punisher". It is a portemanteau of the verb "chatier" and the noun/adjective "fol", which were also adapted in english as "[to] chastise" and "fool".