Shara Ishvalda, Worlds Ruin

Annihilation Song-At the beginning of your upkeep, destroy target land opponent controls, Shara Ishvalda gains landwalk for any colors that land could produce.

Whenever a land is put into a graveyard,
create a basic colorless waste land token.

{t}, Exile a land you control: look at the top 6 cards of your library, put all land cards into your graveyard. put the rest at the bottom of your library in a random order.