Collector Booster



Magic Collector Boosters are booster packs targeted at collectors. Unlike Draft Boosters, which optimize the Draft experience with a lot of repetition and a huge number of commons, Collector Boosters are maximized for more diversity in content, with more rares, foils, extended art, borderless planeswalkers and showcase cards.

History
For Ravnica Allegiance, Wizards introduced the first Collector Boosters. They contain fifteen cards for $12.99: These featured: This was a very limited experimental test run. Collector Boosters were only available in Japan and North America, and even there they were not widely available.
 * 2 foils of any rarity
 * 3 rares/mythic rares
 * 10 uncommons

Collector Boosters became a regular feature with the release of Throne of Eldraine. This version contained:
 * 1 rare/mythic rare with extended art
 * 1 foil rare/mythic rare
 * 9 foil commons/uncommons
 * 3 special-frame cards (showcase cards or borderless planeswalkers)
 * 1 ancillary card (a new card that is connected to the set but doesn't appear in Draft Boosters. E.g. cards from Planeswalker decks)
 * 1 foil token

Booster Fun
R&D introduced "Booster Fun" as the collective name that R&D use for the types of card frames (called  card treatments ) that could appear in Collector Boosters: extended art, borderless planeswalkers and showcase cards. Booster Fun cards evolved from Masterpieces. The difference is that the Booster Fun cards are versions of cards in the set, not from outside of the set.

Foil and non-foil Booster Fun cards may also appear in regular Draft Boosters, but at a much lower rarity. Non-foils appear in the same rarity slot as the original card. Foil Booster Fun cards appear in a common slot like other foils.

Booster Fun was later also extended to Set Boosters.