Great but some of these are not in standard anymore..
And it would help if those could be listed separately :)
Took me a standard game or two vs mage to remember that Effigy/Duplicate are out of circulation, so killing creatures is no longer a required step in figuring out what's the secret. If this list is for the purpose of that identification, it could be changed so it's easier to read for standard players.
Also, an update has gone out to the Secrets Calculator with the Witchwood cards and format for the Standard format. I recommend using the tool over this page if you want a quick overview of what you can expect from your opponent since we can filter stuff out via the tool but we can't on the forums :D