A player may roll the Planar Die as many times as they want at the cost of one colorless mana for each time the die has already been rolled that turn
You won't see this one show up in Standard all that often, but it definitely was a house in Limited back when March of the Machine was the premier draft on Arena
Theres even an argument for it in more generic Aggro decks like Isshin, Two Heavens as One, since rummaging, damage over time, and tutoring are universally effective
The latter is also an easy trap to fall into, as it's a reasonable reaction to see your Pokemon's energy costs and fear the worst
Whats more, by playing lands youll buff some elemental you control and sometimes draw cards
Theyre a fun way of finding hidden gems that could be rare or powerful cards