MH3 Play Booster Pack Product composition (slots)

Commons

common
Non-foil
$ 0.06 to $ 0.93
Pool of 80 cards

Seven per booster, minus one for each of the land and Special Guest cards the pack also includes.

Uncommons

uncommon
Non-foil
$ 0.11 to $ 7.67
Pool of 101 cards

Uncommon cards from Modern Horizons 3's main set — the new-to-Modern reprints have their own slot.

Special Guests

mythic
Non-foil
$ 2.10 to $ 35.75
Pool of 10 cards

A Special Guests card replaces a common in 1 of 64 boosters.

Rare or mythic

raremythic
Non-foil
$ 0.13 to $ 83.46
Pool of 169 cards

Main set only — the new-to-Modern reprints have their own slot.

New-to-Modern reprint

uncommonraremythic
Non-foil
$ 0.11 to $ 45.60
Pool of 61 cards

Cards making their Modern debut, including the Medallions and Kaalia.

Wildcard

All rarities

Non-foil
$ 0.06 to $ 83.46
Pool of 388 cards

Any rarity, main set or Commander deck, with every Booster Fun treatment.

Foil wildcard

All rarities

Traditional foil
$ 0.08 to $ 163.04
Pool of 447 cards

A traditional foil card of any rarity and any treatment.

Land

common
Foil or non-foil
$ 0.15 to $ 0.40
Pool of 30 cards

A basic land or full-art Eldrazi land, present in half of all boosters — the rest carry a seventh common instead.