Countervailing Winds

Counter target spell unless its controller pays {1} for each card in your graveyard.
Cycling {2} ({2}, Discard this card: Draw a card.)

Mana Tithe

Counter target spell unless its controller pays {1}.

Aura of Silence

Artifact and enchantment spells your opponents cast cost {2} more to cast.
Sacrifice Aura of Silence: Destroy target artifact or enchantment.

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.

Island

Worldpurge

Return all permanents to their owners' hands. Each player chooses up to seven cards in their hand, then shuffles the rest into their library. Each player loses all unspent mana.

Mana Breach

Whenever a player casts a spell, that player returns a land they control to its owner's hand.

Burning Sands

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

Blue Elemental Blast

Choose one —
• Counter target red spell.
• Destroy target red permanent.

Vryn Wingmare

Flying
Noncreature spells cost {1} more to cast.

Mindslaver

{4}, {T}, Sacrifice Mindslaver: You control target player during that player's next turn. (You see all cards that player could see and make all decisions for the player.)

Thalia, Guardian of Thraben

First strike
Noncreature spells cost {1} more to cast.

Ruination

Disruptive Student

{T}: Counter target spell unless its controller pays {1}.

Glowrider

Noncreature spells cost {1} more to cast.

Thorn of Amethyst

Primal Wellspring

(Transforms from Primal Amulet.)
{T}: Add one mana of any color. When that mana is spent to cast an instant or sorcery spell, copy that spell and you may choose new targets for the copy.

Primal Amulet

Instant and sorcery spells you cast cost {1} less to cast.
Whenever you cast an instant or sorcery spell, put a charge counter on Primal Amulet. Then if there are four or more charge counters on it, you may remove those counters and transform it.

Primal Amulet // Primal Wellspring

Winter Orb

As long as Winter Orb is untapped, players can't untap more than one land during their untap steps.

Artifact Blast

Meteor Golem

When Meteor Golem enters the battlefield, destroy target nonland permanent an opponent controls.

Stasis

Players skip their untap steps.
At the beginning of your upkeep, sacrifice Stasis unless you pay {U}.

Mana Geyser

Add {R} for each tapped land your opponents control.

Ghostly Prison

Creatures can't attack you unless their controller pays {2} for each creature they control that's attacking you.

Vorinclex, Voice of Hunger

Trample
Whenever you tap a land for mana, add one mana of any type that land produced.
Whenever an opponent taps a land for mana, that land doesn't untap during its controller's next untap step.

Torpor Orb

Creatures entering the battlefield don't cause abilities to trigger.

Mana Drain

Counter target spell. At the beginning of your next main phase, add an amount of {C} equal to that spell's mana value.

Obliterate

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

Plains

Blood Moon

Flashfires

Avoid Fate

Counter target instant or Aura spell that targets a permanent you control.

Swamp

Daze

You may return an Island you control to its owner's hand rather than pay this spell's mana cost.
Counter target spell unless its controller pays {1}.

Tergrid's Lantern

{T}: Target player loses 3 life unless they sacrifice a nonland permanent or discard a card.
{3}{B}: Untap Tergrid's Lantern.

Tergrid, God of Fright

Menace
Whenever an opponent sacrifices a nontoken permanent or discards a permanent card, you may put that card from a graveyard onto the battlefield under your control.

Tergrid, God of Fright // Tergrid's Lantern

Forest

Strip Mine

{T}: Add {C}.
{T}, Sacrifice Strip Mine: Destroy target land.

Lodestone Golem

Nonartifact spells cost {1} more to cast.

High Seas

Red creature spells and green creature spells cost {1} more to cast.

Mindbreak Trap

If an opponent cast three or more spells this turn, you may pay {0} rather than pay this spell's mana cost.
Exile any number of target spells.

Deflecting Swat

If you control a commander, you may cast this spell without paying its mana cost.
You may choose new targets for target spell or ability.

Ertai's Scorn

This spell costs {U} less to cast if an opponent cast two or more spells this turn.
Counter target spell.

Cyclonic Rift

Return target nonland permanent you don't control to its owner's hand.
Overload {6}{U} (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")

Sire of Insanity

At the beginning of each end step, each player discards their hand.

Gloom

White spells cost {3} more to cast.
Activated abilities of white enchantments cost {3} more to activate.

Dash Hopes

When you cast this spell, any player may pay 5 life. If a player does, counter Dash Hopes.
Counter target spell.

Defense Grid

Each spell costs {3} more to cast except during its controller's turn.

Lightning Bolt

Lightning Bolt deals 3 damage to any target.

Destructive Force

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

Chill

Boil

Drannith Magistrate

Your opponents can't cast spells from anywhere other than their hands.

Acid Rain

Mountain

Expropriate

Council's dilemma — Starting with you, each player votes for time or money. For each time vote, take an extra turn after this one. For each money vote, choose a permanent owned by the voter and gain control of it. Exile Expropriate.

Negate

Counterspell

Counterlash

Counter target spell. You may cast a spell that shares a card type with it from your hand without paying its mana cost.

Sphere of Resistance

Nether Void

Whenever a player casts a spell, counter it unless that player pays {3}.

Feroz's Ban

Red Elemental Blast

Choose one —
• Counter target blue spell.
• Destroy target blue permanent.

Farewell

Choose one or more —
• Exile all artifacts.
• Exile all creatures.
• Exile all enchantments.
• Exile all graveyards.

Rebuff the Wicked

Counter target spell that targets a permanent you control.

Pact of Negation

Counter target spell.
At the beginning of your next upkeep, pay {3}{U}{U}. If you don't, you lose the game.

Squeeze

Condescend

Counter target spell unless its controller pays {X}. Scry 2. (Look at the top two cards of your library, then put any number of them on the bottom of your library and the rest on top in any order.)

Child of Alara

Trample
When Child of Alara dies, destroy all nonland permanents. They can't be regenerated.