Q: How does Crawling Chaos interact with The Elder Sign?

Crawling Chaos specifies that it detaches creepers from keepers, but The Elder Sign doesn’t use the “attached” nomenclature to describe how it covers a creeper. Is The Elder Sign considered attached to the card it covers for purposes of Crawling Chaos, or does something weird happen?

A: If a Creeper is hidden by the Elder Sign, it’s just like it’s not in play (until you choose to reveal it). Its doom count is not on the table, it can’t be moved, stolen, or destroyed (though if you move or steal or destroy the Elder Sign, the Creeper goes with it.)