Calanis's Overgrowth

(You may cast a legendary sorcery only if you
control a legendary creature or planeswalker.)
Each opponent chooses a number between two
and five. Each player searches their library for a
number of basic land cards equal to the highest
chosen number and puts them onto the
battlefield tapped under their owners control.
Nature is everyone's ally. Tread carefully be it our
lands or theirs.