You better get on it, you're missing a ton of them, enough to bump your Grimoire up over 3000. It would probably take you maybe 2 hours to get all the cards you're missing, and I'd suggest you do because who knows what bullshit requirement the elitist's will come up with next but a high Grimoire score wouldn't surprise me!

Go to the site I have linked, it will help you find the ones you need.