Masters Edition III Magic Online Booster has variants:
Explore this pack in Sealed.

Sheets

Sheet basic

At rate 1/15 (6.67%)

Sheet common (color balanced)

At rate 1/75 (1.33%)

Sheet uncommon

At rate 1/70 (1.43%)

Sheet rare_mythic

At rate 1/70 (1.43%)

Sheet foil

At rate 1/150 (0.67%)
At rate 1/280 (0.36%)
At rate 3/1400 (0.21%)