At low converted mana costs, you can easily take advantage of graveyard setup creatures like Hermit Druid, pull different types of cards back to your hand with Eternal Witness, or even ramp with Wood Elves
If the creatures are too much to handle, it's good to use the creature destruction effect, and if the battlefield is manageable, destroying all lands is the way to go
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Its also one of the few ways to safely get rid of your own lands in case you are actually helping your opponents color fix without destroying all lands on the battlefield
How thick are playing cards
If youre just looking for a growing body for Commander, Astrologians Planisphere might not be worth it at its current pricetag, but for competitive players, this might be a tool you need to stay current.