Ravnica Allegiance Standard Showdown Booster has no variants:
Explore this pack in Sealed.

Sheets

Sheet rare_mythic

At rate 2/701 (0.29%)
At rate 1/701 (0.14%)

Sheet foil

At rate 3/3350 (0.09%)
At rate 1/1840 (0.05%)
At rate 3/7010 (0.04%)
At rate 3/14020 (0.02%)

Sheet showdown_land

At rate 1/10 (10.0%)