Boseiju Who Endures

“T: Add G. <br> <em>Channel</em> — 1G, Discard Boseiju, Who Endures: Destroy target artifact, enchantment or nonbasic land and opponent controls. That player may search their library for a land card with a basic land type, put it onto the battlefield, then shuffle. This ability costs 1 less to activate for each legendary creature you control.”