User blog comment:Rassilon of Old/Young Justice spoilers at Comic-Con 2012/@comment-60.241.135.241-20120716200614/@comment-4928331-20120717074810

Doubt that it's one of Fate's constructs, since his magic have a yellowish tinge. It could possibly be Zatanna - I can't disclaim it. However, the shield in the preview looks like a pyramid, with red energy beams. I'm getting a technological - and not magical vibe from it.