Commander Masters Set Booster has variants:
Explore this pack in Sealed.

Sheets

Sheet basic

At rate 1/15 (6.67%)

Sheet common

At rate 1/130 (0.77%)

Sheet common_uncommon_showcase

At rate 1/21 (4.76%)
At rate 1/42 (2.38%)

Sheet nonlegendary_uncommon

At rate 1/80 (1.25%)

Sheet legendary_uncommon

At rate 1/55 (1.82%)

Sheet wildcard

At rate 7/1300 (0.54%)
At rate 7/1950 (0.36%)
At rate 7/3900 (0.18%)
At rate 7/5400 (0.13%)
At rate 7/8100 (0.09%)
At rate 1/1220 (0.08%)
At rate 1/1830 (0.05%)
At rate 7/16200 (0.04%)
At rate 1/2440 (0.04%)
At rate 1/3660 (0.03%)
At rate 1/7320 (0.01%)

Sheet legendary_rare_mythic

At rate 2/127 (1.57%)
At rate 1/127 (0.79%)

Sheet nonlegendary_rare_mythic

At rate 1/89 (1.12%)
At rate 1/178 (0.56%)

Sheet foil

At rate 3/725 (0.41%)
At rate 2/725 (0.28%)
At rate 1/540 (0.19%)
At rate 1/700 (0.14%)
At rate 1/725 (0.14%)
At rate 1/810 (0.12%)
At rate 1/1050 (0.1%)
At rate 1/1350 (0.07%)
At rate 1/1620 (0.06%)
At rate 1/2025 (0.05%)
At rate 1/2100 (0.05%)
At rate 1/4050 (0.02%)

Sheet the_list

At rate 1/300 (0.33%)

Sheet foil_basic

At rate 1/15 (6.67%)