Mountain

Molten Rain

Destroy target land. If that land was nonbasic, Molten Rain deals 2 damage to the land's controller.

Crack the Earth

Each player sacrifices a permanent of their choice.

Pillage

Destroy target artifact or land. It can't be regenerated.

Raze

As an additional cost to cast this spell, sacrifice a land.
Destroy target land.

Voldaren Epicure

When Voldaren Epicure enters, it deals 1 damage to each opponent. Create a Blood token. (It's an artifact with "{1}, {T}, Discard a card, Sacrifice this artifact: Draw a card.")

Uncontrolled Infestation

Enchant nonbasic land
When enchanted land becomes tapped, destroy it.

Reckless Impulse

Exile the top two cards of your library. Until the end of your next turn, you may play those cards.

Experimental Synthesizer

When Experimental Synthesizer enters or leaves the battlefield, exile the top card of your library. Until end of turn, you may play that card.
{2}{R}, Sacrifice Experimental Synthesizer: Create a 2/2 white Samurai creature token with vigilance. Activate only as a sorcery.

Great Furnace

Crimson Fleet Commodore

Trample
When Crimson Fleet Commodore enters, you become the monarch.

Lightning Bolt

Lightning Bolt deals 3 damage to any target.

Chain Lightning

Chain Lightning deals 3 damage to any target. Then that player or that permanent's controller may pay {R}{R}. If the player does, they may copy this spell and may choose a new target for that copy.