Fan Casting Post-Credits Scene in Justice League: The Looking Glass

The scene goes to Themyscira, where two Amazons can be seen doing their daily patrol around the island, until they come across a little girl who is doing her training. - Don't you think you're a little far from your friends, little one? - I know, it's just that I was a little curious. - With what? The scene shows the little girl pointing to a corner of the island, where a faint (but still visible) glow can be seen before it dissipates. One of the Amazons decides to go towards the place to check if everything is ok now, before going back to what she was doing. Before the screen goes dark, it is possible to see that there is something covered by a cloth, and apparently the source of the glow.