In the Magic: The Gathering trading card game, Urza's Legacy was the first set players could receive foil premium cards from booster packs. Foil versions of different card rarities were available in the set. Over time, the introduction of mythic cards changed rarities available in booster packs. The rate of pulling a foil card out of a booster pack has changed over time as well. In 2019, the pull rate of foil cards increased with the introduction of Core Set 2020. This article will look at the different pull rates of foil cards before and after the release of Core Set 2020. Calculations and information related to this article can be found here.
Probabilities of Pulling Foil Premium Cards Prior to Core Set 2020
When opening booster packs, foil cards had given odds of 1 in 67 cards. Each booster box contained at least one foil rare (or mythic) beside foil common and uncommon cards. The estimated probability of a foil rare was 1 in 540 cards or 1 in 36 booster packs. The general consensus was that a case of booster boxes contained one foil mythic. The probability of pulling one foil mythic in six booster boxes is 1 in 3,240 cards or 1 in 216 booster packs. In summation, an average booster box contained 8 foil cards with one being a foil rare or mythic.
Probabilities of Pulling Foil Premium Cards in Core Set 2020
The given odds of pulling a foil card in Core 2020 is 1 in 45 cards or 1 in 3 booster packs. If the ratio between pulling a foil non-rare and foil rare is maintained from previous sets, then the probability of pulling a foil rare becomes 1 in 363 cards or 1 in 24 booster packs. This means that a booster box may contain 2 foil rares. Using the same previous ratio of a foil rare to a foil mythic, the estimated probability of pulling a foil mythic is 1 in 2,160 cards or 1 in 144 packs. Essentially, 1 in 4 booster boxes may contain a foil mythic. When comparing the probabilities before and after the release of Core 2020, there is a 50% increase in the opportunity to pull a foil rare or mythic.
Probabilities of Pulling Specific Foil Rare and Mythic Premium Cards in Core 2020
There are 53 rare and 15 mythic cards in Core 2020. This information, along with the calculated foil probabilities for Core 2020, can be used to find probabilities for specific foil cards. The result of multiplying (1/53) by (1/24) is 0.08% or 1 in 1,272 booster packs. This is the estimated probability of pulling a specific foil rare. Multiplying (1/15) by (1/144) equals 0.05% or 1 in 2,160 booster packs. This is the estimated probability to pull a specific foil mythic from a booster pack. On average, it would require opening 35.33 booster boxes to find a specific foil rare and 60 booster boxes to find a specific foil mythic.
*The information in this article is of my own knowledge and opinion. It is meant for informational purposes only. I am not a registered financial professional or trying to act as one.*