I think they forgot that this was the time of Delve and not the time of mill. With a dedicated Mill strategy and no Delve, this card could be pretty cool. The way the card is worded, you can play all the lands immediately, and then cast a spell each turn. It's what mill decks are looking for, made epically worse with Delve.
WUBRGPauper Battle BoxWUBRG ... and why I am not a fan of Wayne Reynolds' Illustrations.