DarkSaint85
Bonified abstract
I'm assuming he's doing a Wally, like in OWAW when Darkseid first comes to Metropolis.
Either that, or he is cloning himself a billion times.
And it therefore depends on the herald. Quicksilver, who is not a herald, can EASILY do it.
However, I assume it is being done from the POV of the reader. So like Id said, I can created after images with my hand - with my human level reactions and perceptions.
A hummingbird can create after images with its wings.
IF we were to assume it was done from the POV of the guy he's fighting, then yes, it's a pretty insane feat (assuming he has great reaction speeds). How fast is that guy?