While there might be some long-shot argument that it could be safe in a world where Solitude and Prismatic Ending are heavily played, both of those cards (along with Swords to Plowshares) are legal in Legacy, and Lands is still one of the top decks in the format
This has led to some variation in foil cards over the years, most notably in the sets Future Sight, Lorwyn, and Shadowmoor, which featured darker foils than other sets
Put X +1/+1 counters on target creature, where X is the number of lands you control
Triggering landfall mechanics or just having more total mana than expected is something most people miss
Fertilid, Wood Elves, and Springbloom Druid all fetch lands out of your deck, just like Rampant Growth, but you can flicker or reset them for additional value
Provided you're not the player with the most lands at the table, Land Tax will pop an amazing three basic MTG lands into your hand every single turn