Firebrand Archer

Whenever you cast a noncreature spell, this creature deals 1 damage to each opponent.

Mountain

Destroy target land, then Roiling Terrain deals damage to that land's controller equal to the number of land cards in that player's graveyard.

Lightning Bolt deals 3 damage to any target.

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

Whenever you cast a noncreature spell, Kessig Flamebreather deals 1 damage to each opponent.

Destroy target land. Its controller may search their library for a basic land card, put it onto the battlefield tapped, then shuffle.
Draw a card.

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

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

Destroy target land.
Flashback {5}{R}{R} (You may cast this card from your graveyard for its flashback cost. Then exile it.)