There have been nineteen sets (so far, ONE is #20) with Collector Boosters, and frankly, every one has had a slightly different formulation when it comes to calculating what goes where. 

I should know; I’ve had to figure out all of them. 

Each time I do, I put together a comparison table for rarities, but what I’ve made for our members now is a spreadsheet of the percentages and odds, sortable in whatever ways you want to use the data. I’m not a data scientist, just a Magic nerd who likes knowing precise things.

So here it is, the first comprehensive attempt at relative rarities!

For the spreadsheet, this is all for foils. Some of these are not able to be foil, such as Dominaria United’s Lost Legends inserts, but most of these are for the foils.

So here it is, the first comprehensive attempt at relative rarities!

Here you are, a link for this very useful tool:

The Comprehensive Collection of Relative Rarities

The odds that are listed are for you to pull a foil card of a certain rarity, in any version. Wizards has a method for cards that I think of as the double roll. First you roll to see what card you get, and then you roll to see which version of that card you get.

For example, in Kamigawa: Neon Dynasty, you have a 1/272 chance of pulling any given mythic from that slot in a Collector Booster. But because there are two different premium versions of Jin-Gitaxias, Progress Tyrant, the Soft Glow and the Phyrexian, you have a 1/544 chance for the Phyrexian version.

Sadly, there’s no simple way to create a database of the number of versions available. The workaround I’ve found is to find the card in Scryfall, and see how many options there are. 

I would also recommend that you do a search for my articles “The Math of…” in order to find a more comprehensive overview of which cards have which treatments. I try hard to keep things organized, and you should enjoy the fruits of this labor.

Those articles will also clarify why some sets have different entries for Showcase styles, or FEA. Wizards has done a lot of different formulations when it comes to which versions can be found in which slots.

There is a second sheet dedicated to the rarest versions of cards for each set, so we can keep track of which are the luckiest pulls.

As always, if you notice problems, please reach out in the comments or in the discord!

Cliff (@WordOfCommander) has been writing for MTGPrice since 2013, and is an eager Commander player, Draft enthusiast, and Cube fanatic. A high school science teacher by day, he’s also the official substitute teacher of the MTG Fast Finance podcast. If you’re ever at a GP and you see a giant flashing ‘CUBE DRAFT’ sign, go over, say hi, and be ready to draft.