Board Thread:Fun and Games/@comment-26362471-20190820035613/@comment-26362471-20190820151417

Also, he isn't immune to existence erasure and her immortality negation so Sierra could kill him. Her Conceptual Poison works on 11th-Dimensional beings which from what I understand would still affect him.

Excerpt from Sierra's Page "Existence Erasure and Durability Negation plus Healing (Her basic attacks bypass durability and resistances on a conceptual level. Even beings with high-godly regeneration cannot easily recover from a hit from her and she can kill most types of immortals. Each successful attack also heals her equivalent to the damage dealt)"

And being that she does fight 11-dimensional Hilbert Space being which these same powers it is safe to say that Sierra can effect him.

He can't kill her due to him lacking immortality negation and her Resistance to conceptual attacks.