"The human whose name is written in 'The Death Note' shall die" is the basic rule that governs the weapon, made by the King of Death, who also wrote the other rules for using the deadly notebook.
It is the most powerful Noble Phantasm contained in the Gate of Babylon. Gilgamesh from The Fate Series possesses a sword-like weapon, which pierces through the enemy even with its dull tip.
King's holy weapon, the Spirit Spear Chatiefol, appears frequently on a large green pillow that floats alongside him. However, it turns into a bigger golden bear spear during combat.
Holy Sword Excalibur can kill anyone, including gods, immortals, and spirits. The virtually indestructible sword can also heal auras.
Pumpkin is a rifle-type weapon. It has a case with multiple parts, which can be detached and attached to the weapon to modify it.
The Stand Arrow was originally a meteoroid that contained an unknown virus within it that would kill most that tread near it.
The Scissor Blade is a giant pair of scissors, developed to kill Life Fibers and prevent their regeneration. It consists of two blades, one red and the other purple, which can only be used together to activate its effect.
Kurikara is a sword created by the King of Time. It has the uniqueness of being a 'door to anywhere.' It also has the power to seal demons inside it.
Samehada can transfer the chakra it has absorbed to the wielder by partially fusing with them. Thus, it's not easy to defeat the sword's user.