Thread:OBWforumsContentRevision/@comment-38927992-20190801211431/@comment-38927992-20190814192345

"Ren's Holy relic is the Margueritte Bois de Justice, which is literally Marie in the form of a guillotine in his right arm, Marie was born with a Curse that let her passively decapitate anyone around her, Anything she touched or anyone who touched her would be instantly decapitated as well. So the guillotine in his hand replicates this curse."

Ren has a base which is like mountain level. Marie however throughout Dies Irae maintains the strength of a Hadou God, which is why she touching sensory mercurius would bring an end to his emanation which would bring an end to him and start her own emanation, the point isn't anything about sensories or base forms, the only way she would be able to start her own emanation is to kill the current Hadou God who holds the throne, which is Mercurius's true form.

for a short synapse, Mercurius's Avatar is killed, which stops his emanation, as the only way to bring about the end of one Hadou God's emanation is by killing them permentantly so, context wise she should be able to neg his Immortality and regeneration.