Of course in order to have a big impact youll have to have planeswalkers with lots of loyalty to spare (looking at you Karn Liberated, Ugin, the Spirit Dragon, and Nicol Bolas, God-Pharaoh) or have a surplus amount of them
The cool thing about this card is that it doesnt have to be four color, it can also fit in Grixis or Sultai decks, but it also allows you to build four colored commander decks around it
Sure, basic lands have their place, but it's far more satisfying (and powerful) to play a shock land or fetch land rather than a vanilla Island or Plains
10.-The only card not from the main series 11
The downside is that your opponent gets to search their library for a land card, which goes onto the battlefield tapped, but in mid-to-late game situations, this isn't too much of an issue