Roiling Regrowth

Sacrifice a land. Search your library for up to
two basic land cards, put them onto the battlefield tapped, then shuffle your library.

“A system maintains a certain fluid stability that
can be destroyed by a misstep in just one niche. A system has oder, flowing from point to point. If something dams that flow, order collapses. The untrained might miss that collapse until it was too
late. That's why the highest function of ecology is the understanding of consequences.” -Liet-Kynes