WHAT BOOSTER PACKS DO I GET? : CARDS AND GEMS CALCULATOR (MORROWIND ED.)

(UPDATED FOR MORROWIND)
Ever wondered what booster pack to get next? I made something just for that.

Its just a little spreadsheet in which you input the number of cards you own from each set and rarity, and get the owned gems percentages for each set and a recommendation based on those (apart from some other data).

screenshot[i.imgur.com]
>>> Go to this link and make your own copy to modify it <<<[docs.google.com]

INSTRUCTIONS(also included in the spreadsheet):
-Make a copy to modify your own (File->dowload as)
-Use Universal Deck Tracker[github.com] to export your collection to legends-decks.com
-Use https://www.legends-decks.com/ to get owned cards (Profile->MyCollection)

It's been useful to me, and i hope it'll also be useful to the community.