Boseiju, Who Endures

{t}: Add {g}

Channel — {1}{g}, 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.