Mountain

Molten Vortex

{R}, Discard a land card: Molten Vortex deals 2 damage to any target.

Swans of Bryn Argoll

Flying
If a source would deal damage to Swans of Bryn Argoll, prevent that damage. The source's controller draws cards equal to the damage prevented this way.

Island

Seismic Assault

Discard a land card: Seismic Assault deals 2 damage to any target.

Treasure Hunt

Reveal cards from the top of your library until you reveal a nonland card, then put all cards revealed this way into your hand.