User blog comment:LegerPrime/The Black Dragon and The White Dragneel/@comment-84.197.227.90-20161003161930

I think the only soul/life reaper would be Anksheram and Zeref already has his powers, more or less.

Zeref always wanted to die and he already encountered Mavis who had the soul/life reaping curse AND apparently loved Zeref (required to reach the full potential of the Ankhseram Curse), but she couldn't do it.

Then he created Franmalth, a being with the power to reap/absorb souls and this fella wasn't capable of killing zeref either.

So there wouldn't be a need to raise anoher soul reaper. Unless he had some solid reasning to assume Larcade would do better than Mavis or Franmalth.

I assume Acnologia has a mixture of elements. Something like a "perfect" God Serena. For starters, Acnologia is known to have killed many Dragons and DS in the past, perhaps he also acquired a multiple element mode, like Natsu's Fire Lightning Mode, Gajeels Iron Shadow or Future Rogue's Holy Shadow.

Whether he got this by eating the elements or taking them from slain opponents remains to be seen.

Then there's the fact that Acnologia's roar looked a bit like Etherion (more like same color) and Etherion is made up of multiple elements as well. Of course, the latter argument isn't really strong as there may be many explanations about the color, like random choice for example.

My money is on Acno being able to use/combine multiple elements.

By the way, when God Serena appeared before the FT mages, did he create several Dragons made of ice? I'm not really sure on this as it looked like ice, but wasn't confirmed iirc.