Swamp

The Infamous Cruelclaw

Menace
Whenever The Infamous Cruelclaw deals combat damage to a player, exile cards from the top of your library until you exile a nonland card. You may cast that card by discarding a card rather than paying its mana cost.

Tectonic Hazard

Tectonic Hazard deals 1 damage to each opponent and each creature they control.

Worldfire

Exile all permanents. Exile all cards from all hands and graveyards. Each player's life total becomes 1.