Gate Key
Temple of the Deceived#71 (x1)
Temple of the Deceived
If unattached, return Gate Key to the staging area and it gains: "Action: Exhaust a hero to claim Gate Key and attach it to that hero."

Action: Exhaust Gate Key and attached hero and spend 3 resources from attached hero's resource pool to look at the facedown side of a Temple of the Deceived.