Theory

[Uchicha Macho]

i think one of ems ability is
making the susano perform jutsu for example

madara susano perform a jutsu to bring the meteor down to earth.i think it not an rennigan move because the susano did it.
Remember when ems sasuke summon his susano it use amaterasu arrow to kill the zetsu. after that he told his susano that we are ready to go out of the place.
i think sasuke susano can swap weapon maybe it got itachi susano weapon but it got to perform an jutsu and some other super suprising jutsu

 

[Erzo]

Whats the view from there?

 

[~WastelandSociety~]

Yea. I thought it could be sasunoo move, and the jutsu isn't a meteor.