Star of Extinction

Destroy target land. Star of Extinction deals 20 damage to each creature and each planeswalker.

Roiling Terrain

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.

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

Whenever a land is put into a graveyard from the battlefield, Dingus Egg deals 2 damage to that land's controller.

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

If target player has exactly 10 life, Hidetsugu's Second Rite deals 10 damage to that player.

As an additional cost to cast this spell, discard a card or pay {5}.
Lightning Axe deals 5 damage to target creature.

Crackle with Power deals five times X damage to each of up to X targets.

Lightning Bolt deals 3 damage to any target.