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

Sheets

Sheet common_with_showcase (color balanced)

At rate 1/130 (0.77%)
At rate 1/195 (0.51%)
At rate 1/390 (0.26%)

Sheet nonlegendary_uncommon

At rate 1/80 (1.25%)
At rate 1/120 (0.83%)
At rate 1/240 (0.42%)

Sheet legendary_uncommon

At rate 1/55 (1.82%)
At rate 2/165 (1.21%)
At rate 1/165 (0.61%)

Sheet legendary_rare_mythic

At rate 2/127 (1.57%)
At rate 4/381 (1.05%)
At rate 1/127 (0.79%)
At rate 2/381 (0.52%)
At rate 1/381 (0.26%)

Sheet nonlegendary_rare_mythic

At rate 3/268 (1.12%)
At rate 1/134 (0.75%)
At rate 3/536 (0.56%)
At rate 1/268 (0.37%)
At rate 1/536 (0.19%)

Sheet foil

At rate 3/730 (0.41%)
At rate 1/365 (0.27%)
At rate 1/540 (0.19%)
At rate 1/700 (0.14%)
At rate 1/730 (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 special

At rate 1/1 (100.0%)