Riley Miller

Eminence— At the beginning of your upkeep if Riley Miller is in the command zone or on the battlefield, you may pay {4}{r}. If you do, for each player destroy target nonbasic land that player controls. Then each player that had a land destroyed this way searches their library for a basic land and puts it onto the battlefield.

Instants and sorceries you cast have undaunted. (This spell costs {1} less to cast for each opponent.)