Magic Origins has variants:
Explore this pack in Sealed.

Sheets

Sheet basic

At rate 1/20 (5.0%)

Sheet common (color balanced)

At rate 1/101 (0.99%)

Sheet uncommon

At rate 1/80 (1.25%)

Sheet rare_mythic

At rate 1/63 (1.59%)
At rate 1/126 (0.79%)

Sheet foil

At rate 3/605 (0.5%)
At rate 1/320 (0.31%)
At rate 1/420 (0.24%)
At rate 1/840 (0.12%)