Currently, the regular versions of the lands range from $4.49 (Overgrown Farmland) to $9.99 (Shipwreck Marsh), so a full playset wont set you back more than $40
One of its main advantages is that it not only makes it so that stax pieces like Winter Orb dont affect you, but it also turns them into mana rocks
Banned in Modern Once Upon a time
The card is clearly not anywhere close to being ban-worthy, hence my outlandish claim, but lets see if can reasonably get there
There are other benefits to these spells that make them slightly better than a 1-for-1 exchange, but they do not put you up on cards or any sort of permanents in play, and are therefore not card advantage
The problem is that the deck has a bunch of other themes that are getting in the way