Hmm when I think about one of his abilities Immortality Negation, "Yogiri is not only being able to kill anything, but he can also completely negate different types of immortality, such as resurrection, regeneration, undead people and even targets whose concept of death doesn't apply to."
Thinking it that way he could out right kill the Primordial God Tiamat out right in FGO Babylon considering concept of death doesn't apply to her since she is a Primordial Goddess of life because this ability seems to kill being that death doesn't apply to I think, Damn even this ability is stronger then Mystic Eyes of Death Perception.