A big order
Mary appeared in front of Lex, looking just as alarmed as him. She quickly searched through the information she had, which made her grimace.
"According to the guide, there are a few circumstances in which the keys, and other associated Inn powers, will cease to work. One such situation is if using the ability will result in catastrophic or irreversible damage. The keys, specifically, could also fail if they are in some unique spaces, or are being blocked by certain powers with strong enough protection. You saw the same thing when you entered the tower in the Crystal realm."
Lex did not want to play the blame game right now, where he accused the system of hiding such information from him. The truth was that while the system never informed him, he never asked either.