Class Skills:
Independent Manifestation: B
A special Skill that permits unsupported manifestation into reality, without necessity of energy cost or of summoning by a Master. As the skillholder is signified as a "confirmed existence", a resistance is rendered against the instantaneous imposition of death and attacks affected by time manipulation. An ability that all Evils of Man necessarily manifest with. Beast V/L's identity originates from the amalgamation of many beings who are different yet the same; some are merely another interpretation of his being, others are past versions of his self. As a result, he is not burdened by the limits of space and time and his existence extends across them.
The Authority of the Beast: A
An Anti-Human Skill that enhances the skillholder's capacity to harm existences that are classified as Humans. In Beast V/L's case, it's essentially a Divine Authority, the judge's right over those who tarnish "dharma". Beast V/L is a protector and defender of dharma - a wrathful Divine Spirit known as dharmapāla. As for the definition of dharma: rather than "law", it is more accurate to define it as "the virtuous way of living" - to act in accordance to the world's law and follow the duty you were born with - but Beast V/L makes no difference between these two terms. The law/dharma is sacred and absolute, therefore breaking it marks one as a wicked sinner "whose place in the cosmos is unnecessary". Following Beast V/L's alien mindset, lawbreakers/sinners are those who "act above or below their station". A Servant's duty is to protect humanity, so one who fails to do so due to either negligence (by not properly opposing him with all their might) or incompetence (by being defeated) is one who breaks dharma. Those who breach such strict conduct are massively weakened by being reduced to "the weakest specimen of their kind". In the case of Servants, all parameters and Class Skills fall to E-Rank.
Self-Modification: EX
The aptitude to remold one's own body or merge one's own flesh with body parts of others. At this rank, even the Saint Graph can be altered. Yama refers to several beings in mythology, so Beast V/L can't be identified as only one of them. He is Yama, the son of Sun-God Surya - he is Yamaraja, the dharmapāla - he is King Enma, the judge of Naraka - he is Yanluo Wang, god of death and ruler of Diyu. As a result, he is Yama-Raja. Many Saint Graphs have been smashed together, but this also includes the essence of Archdemon Asmodeus; it is both the cause and consequence of Yama-Raja's manifestation as an Evil of Man. Since Asmodeus is a flaming creature who presides over the deadly sin of Lust, it doesn't suit Yama-Raja's role as a wrathful dharmapāla and judge with no desires of his own. As a Beast, this Skill has altered his "original" disposition and twisted him from a dispenser of stern justice into a furious destroyer who enforces his inflexible law even upon those he has no right to condemn, a radical tyrant who tolerates no opposition and exterminates all opponents. Thus, a Beast that embodies the Sin of Severity.
Personal Skills:
As'medi: EX
The ultimate destructive skill, named after the Aramaic word for "destroyer". The origin of Archdemon Asmodeus, a superior existence whose shape was already defined even before the awareness and observation of Man molded it - therefore, a True Demon. Asmodeus is merely the most popular and recent interpretation of Sydonai (one who destroys), an aēšma-daēva (wrathful demon). Before degenerating into an Archdemon that wields lust to merely corrupt the spirit, it was once an almighty creature that destroyed the civilization of Man. Asmodeus' original roots have been brought to the surface as a Skill thanks to Beast V/L's nature as an Evil of Man who "must destroy". Manifesting as flames due to several factors (being the son of the Sun, being the judge of Hell, being an Archdemon of Hell), it is the greatest "Anti-Humanity" ability when concerning a number of targets that does not encompass the entirety of the species, so it would be more accurate to define it "Anti-Man". Tolerating no opposition or resistance, it ignores any sort of struggle that may hinder the complete destruction of the target. A shield that repels evil, a golden armor that negates harm, an immortal body that accepts only the mightiest blows, a shield that encloses an entire world, a noble flag that defends one's comrades, a sheath bestowed by the Fairies - as long as the target is a finite existence categorized as Man, there is no counter.
Kavacha and Kundala (Hell): A-
Originally a Noble Phantasm of Heroic Spirit Karna, it manifests as a Skill embodying the "concept of armor" due to Beast V/L's insistence despite having never been granted such privilege in life or death. The invincible golden armor granted by Sun-God Surya to his son Karna, it is the light of the Sun made manifest. Beast V/L made it his own by evoking the "virtue of precedence": just as he became the judge of the dead by having been the first human to greet death, he is a far older son of Surya and therefore should "naturally" own his younger sibling's armament. The effects of this Skill are essentially the same as the original Noble Phantasm - all physical and conceptual damage is reduced to 10% of its original value - but the concept of Asmodeus as an "Archdemon of Hell" residing within Beast V/L clashes with the armor's origin as a gift from the divine Sun. The contradiction creates several weaknesses in the armor, making it vulnerable to both Anti-Divine and Anti-Demon attacks.
Nega-Slayer: A
A sub-category of Beast V/L's idea of dharma, working in conjunction with his Authority of the Beast. It allows Beast V/L to nullify the activation and passive effects of skills, abilities and armaments that confer a powerful offensive advantage over existences categorized as "superior" to the owner or wielder. Therefore, a chain that binds the creatures of heaven, a holy sword that incinerates the enemies of the World, a blade that slays Dragons, a spear of the Sun that brings death to all, an invincible demon-slaying blade - including all Skills with similar effects, any attempt to activate them will be seen by Beast V/L as a Servant "acting above their station" and used as infallible evidence to target them with The Authority of the Beast. The Skill is active rather than passive, so one could take advantage of its nature by striking Beast V/L outside of his awareness, although that is hardly a feat easy to accomplish. Moreover, it does not target "slayers of their own kin", such as a Divine Spirit who acts as a god-killer.