Boiling Seas

Flashfires

Azorius Signet

Fall of the Thran

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)
I — Destroy all lands.
II, III — Each player returns two land cards from their graveyard to the battlefield.

Blood Moon

Boros Signet

Sunder

Devastation

Armageddon

Tectonic Break

Each player sacrifices X lands of their choice.

Teferi's Protection

Until your next turn, your life total can't change and you gain protection from everything. All permanents you control phase out. (While they're phased out, they're treated as though they don't exist. They phase in before you untap during your untap step.)
Exile Teferi's Protection.

Mana Vortex

When you cast this spell, counter it unless you sacrifice a land.
At the beginning of each player's upkeep, that player sacrifices a land of their choice.
When there are no lands on the battlefield, sacrifice Mana Vortex.

Lotus Petal

{T}, Sacrifice Lotus Petal: Add one mana of any color.

Keldon Firebombers

When Keldon Firebombers enters, each player sacrifices all lands they control except for three.

Decree of Annihilation

Exile all artifacts, creatures, and lands from the battlefield, all cards from all graveyards, and all cards from all hands.
Cycling {5}{R}{R} ({5}{R}{R}, Discard this card: Draw a card.)
When you cycle Decree of Annihilation, destroy all lands.

Cataclysm

Each player chooses from among the permanents they control an artifact, a creature, an enchantment, and a land, then sacrifices the rest.

Mana Vault

Mana Vault doesn't untap during your untap step.
At the beginning of your upkeep, you may pay {4}. If you do, untap Mana Vault.
At the beginning of your draw step, if Mana Vault is tapped, it deals 1 damage to you.
{T}: Add {C}{C}{C}.

Wildfire

Each player sacrifices four lands of their choice. Wildfire deals 4 damage to each creature.

Worldfire

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

Ravages of War

Arcane Signet

{T}: Add one mana of any color in your commander's color identity.

Boil

Jeska's Will

Choose one. If you control a commander as you cast this spell, you may choose both instead.
• Add {R} for each card in target opponent's hand.
• Exile the top three cards of your library. You may play them this turn.

Plains

Izzet Signet

Acid Rain

Thoughts of Ruin

Each player sacrifices a land of their choice for each card in your hand.

Impending Disaster

At the beginning of your upkeep, if there are seven or more lands on the battlefield, sacrifice Impending Disaster and destroy all lands.

Island

Obliterate

This spell can't be countered.
Destroy all artifacts, creatures, and lands. They can't be regenerated.

Tsunami

Burning Sands

Whenever a creature dies, that creature's controller sacrifices a land of their choice.

Global Ruin

Each player chooses from the lands they control a land of each basic land type, then sacrifices the rest.

Wake of Destruction

Destroy target land and all other lands with the same name as that land.

Price of Glory

Whenever a player taps a land for mana, if it's not that player's turn, destroy that land.

Kykar, Wind's Fury

Flying
Whenever you cast a noncreature spell, create a 1/1 white Spirit creature token with flying.
Sacrifice a Spirit: Add {R}.

Land Equilibrium

If an opponent who controls at least as many lands as you do would put a land onto the battlefield, that player instead puts that land onto the battlefield then sacrifices a land of their choice.

Mountain

Destructive Force

Each player sacrifices five lands of their choice. Destructive Force deals 5 damage to each creature.

Apocalypse

Exile all permanents. You discard your hand.

Wasteland

{T}: Add {C}.
{T}, Sacrifice Wasteland: Destroy target nonbasic land.

Ruination

Epicenter

Target player sacrifices a land of their choice.
Threshold — Each player sacrifices all lands they control instead if seven or more cards are in your graveyard.

Bend or Break

Each player separates all nontoken lands they control into two piles. For each player, one of their piles is chosen by one of their opponents of their choice. Destroy all lands in the chosen piles. Tap all lands in the other piles.

Sol Ring

Catastrophe

Destroy all lands or all creatures. Creatures destroyed this way can't be regenerated.