Boseiju, Who Endures

{t}: Add {g} to your mana pool.

Channel - {1}{g}, Discard this card: Destroy target
artifact, enchantment, or nonbasic land an opp-
onent 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 crea-
ture you control.