The Ring Goes South
Note: The image above may show a different printing.

魔戒南去 (The Ring Goes South) (zhs)

Sorcery (CMC 4)
The Ring tempts you. Then reveal cards from the top of your library until you reveal X land cards, where X is the number of legendary creatures you control. Put those land cards onto the battlefield tapped and the rest on the bottom of your library in a random order.