We recently stole a phylactery. We now have to figure out how to destroy it, and in the meantime need to conceal it from being located by its owner that will soon be realizing what is going on. We figure the lich knows wish, and so simply putting it into a lead box will do us no good -- the lich could just wish for the thing to be in their possession again.
So our current plan is to put it into a dead-magic zone we know of, that suppresses all magic and put it into a lead box there. There is a Q&A about wish being able to overcome such an effect, but that at least would force the lich to burn one wish to try and locate or retrieve it, then when that does not work another one to become immune from whatever is shielding it, and lastly a third one to finally really locate and retrieve it. If we are lucky, one of the first two off-label uses would burn the lich's ability to ever cast wish again.
However, this plan hinges on the assumption that there are no other spells that could locate an object shielded by lead. If there are they'd only need a single off-label wish, and that would always be possible. Are there any such spells?