Perhaps, but they would first need to have recognised the cruxis crystal as an exsphere. Until I told you, you had no idea. Still ... Dirk is the one who made the key-crest to begin with, and his people know the art. I suppose it's possible.

[Kratos frowns, dropping his hand.]

It would put him in danger, however. There are some dwarves Yggdrasill courted for his cause -- not all of them remain in his service. If Yggdrasill thinks Dirk is one of those who fled Cruxis, it could cause him problems; and if anyone asks him, the ruse would be over. It's too weak to rely upon, and we would need the children to be aware of the ruse enough to lie about it.

[Which runs into the problem of giving them far too much information, and their ability to act.]