{NAME:}
Longinuslanze Testament or Covenant- The holy spear of destiny
{VERSE:}
Shinza Bansho
{CLASSIFICATION:}
Soul Manipulation, Homing Attack, Reactive Power Level, Conceptual Manipulation, Mind Manipulation, Curse Manipulation, Essence Manipulation, Non-Physical Interaction, Acausality Negation, Immortality Negation and Regeneration Negation (High-Godly)
{DESCRIPTION:}
Reinhard's Ahnenerbe, Materialization-Type. It is also known as the Spear of Destiny, the spear that infamously pierced the son of God. It is a weapon only he himself can wield due to being the most charismatic being in the world, representing the form of his Valhalla, as well as the pinnacle of all Ahnenerbe. The lance itself chose its wielder, it holds the basic function of searing down the body, mind, and soul of a being not recognized as its current master that tries to hold the lance. Not even Zarathustra Übermensch, the successor of Ewigkeit and an autonomous Ahnenerbe capable of wielding every kind of Relics, is exempt from this rule. Attempting to replicate the Holy Lance would also brought down a divine curse, as evidenced by the Sakurai bloodline who was commisioned by Heinrich Himmler to create a replica of the lance out of jealousy because he couldn't wield the spear himself. The Sakurais were cursed, with one of their family member forced into an eternal servitude towards the Longinus Dreizehn Orden as a gestalt undead known as Tubal Cain.
The spear is described as being "Fast like Albedo, never missing like Rubedo, and all-killing like Nigredo". In other words, it is a spear that moves faster than its target, always chasing its targets and killing them on a physical, spiritual, and conceptual level. Reinhard can also instantly curse the target with a Stigmata with the Longinuslanze should he choose to at anytime, making them a part of his Legion and marking them as his Einherjar and slave upon death, where their soul will automatically be dragged to Gladsheimr. Reinhard can also use the spear to project beams of golden light, turning anyone and anything in its path to ashes and can even wash away the Laws of Mercurius World.
Additionally, the spear can also ignore the concept of distance, as Rindou Koga (his Ahnenerbe's successor in Kajiri Kamui Kagura) was able to do this through her use of it against the Tenma's and Valeria was able to use this to get close to Schreiber and attack him in surprise while the latter had his True Briah active, where even an incomplete activation of it caused distance to increase between him and Ren despite the former not moving at all. This aspect allows Reinhard to have the spear fired at his enemies in an instant without having to cross any distance at all. The spear can also pierce through other "worlds" such as Wilhelm's Briah, which creates a world that isolates itself from the rest and was shown to even pierce Marie herself, whose true self exists in the Twilight Beach.
Aside from Reinhard himself, those who look upon the Lance itself will have their minds burned and their souls erased. Even those of the LDO, who are capable of fighting Methuselah even while under the latter's presence of darkness, would have had trouble maintaining their consciousness while in its presence. Those who attempt to lay hands on it will also have their existence erode the longer they hold onto it - even Ren Fuji, the Ahnenerbe of Mercurius, who has the unique capacity to wield any other Ahnenerbe in the series such as Beatrice's and Rusalka's, was having his body and soul destroyed when he attempted to use it against Reinhard during the events of Kei's route.
{HOW IT WORKS:}
I honestly don't know how to go about this part. The spear ignores the concept of distance, is always concpetually faster then you, and erases you on a conceptual level. Classic op funny stuff. There's no explicit stated reason on how the ability works the way it does, like most forms of media it just kinda happens and you have to take it for what it is.
{POTENCY:}
Extended melee ranges, Hundreds of Kilometers normally, extra-dimensonal, beyond all dimensions of time and space.
{DISCLAIMER:}
Theres literally no standard weakness for this, unless you wanna go down the route of "just have higher versions of the spears abilites" but like that doesn't feel right.