A possibility I just thought of as to why he is alive is that Moria may have have pulled a Reaper Death Seal with his Shadow powers to absorb some of Blackbeard’s power preventing him from killing Moria without kill himself too or his other self
Even Hancock states that DF status effects don’t disappear when the user dies. Knowing Moria I don’t doubt for a second his shadows run deep
Shadows and Darkness go hand in hand, it’s possible the ace Moria has is an awakening or just now he can make multiple Doppelmen… The power of Shadow Clones is already nigh unstoppable but we also have gigantification with Bigger Gecko

Teamed up with Perona they are the lazy dream team and can instantly neg anyone without having to try, fitting for Warlords in the NWz.
To the people that want Mihawk to save Perona, thats stupid but Moria is in Mihawk’s shadow if it’s any comfort.
Even Hancock states that DF status effects don’t disappear when the user dies. Knowing Moria I don’t doubt for a second his shadows run deep
Shadows and Darkness go hand in hand, it’s possible the ace Moria has is an awakening or just now he can make multiple Doppelmen… The power of Shadow Clones is already nigh unstoppable but we also have gigantification with Bigger Gecko

Teamed up with Perona they are the lazy dream team and can instantly neg anyone without having to try, fitting for Warlords in the NWz.
To the people that want Mihawk to save Perona, thats stupid but Moria is in Mihawk’s shadow if it’s any comfort.