War of the Spark Arena Booster has variants:
Explore this pack in Sealed.

Sheets

Sheet common (color balanced)

At rate 1/101 (0.99%)

Sheet nonplaneswalker_uncommon

At rate 1/60 (1.67%)

Sheet planeswalker_rare_mythic

At rate 2/29 (6.9%)
At rate 1/29 (3.45%)

Sheet planeswalker_uncommon

At rate 1/20 (5.0%)

Sheet nonplaneswalker_rare_mythic

At rate 1/46 (2.17%)
At rate 1/92 (1.09%)