Ancient Tomb is nice, but City of Traitors would have been more nicer.
Also aren't the expeditions standard legal? So if Wasteland does get the call up, then Wizard's is really doubling down on the most expensive standard ever.
No, Expeditions are only legal in the format's they were already legal in. Although, I think if you draft one you can use it for that event.
"The Ancients teach us that if we can but last, we shall prevail."
—Kaysa, Elder Druid of the Juniper Order