At the beginning of your upkeep, put a time counter on As Foretold.
Once each turn, you may pay {0} rather than pay the mana cost for a spell you cast with mana value X or less, where X is the number of time counters on As Foretold.
{1}{W}{W}
Aura of Silence
Enchantment
Artifact and enchantment spells your opponents cast cost {2} more to cast.
Sacrifice Aura of Silence: Destroy target artifact or enchantment.
{4}{W}{W}
Austere Command
Sorcery
Choose two --
• Destroy all artifacts.
• Destroy all enchantments.
• Destroy all creatures with mana value 3 or less.
• Destroy all creatures with mana value 4 or greater.
{2}{W}{W}
Baird, Steward of Argive
Legendary Creature - Human Soldier
Vigilance
Creatures can't attack you or planeswalkers you control unless their controller pays {1} for each of those creatures.
2 /
4
{U}
Brainstorm
Instant
Draw three cards, then put two cards from your hand on top of your library in any order.
{1}{U}{U}
Callaphe, Beloved of the Sea
Legendary Enchantment Creature - Demigod
Callaphe's power is equal to your devotion to blue. (Each {U} in the mana costs of permanents you control counts toward your devotion to blue.)
Creatures and enchantments you control have "Spells your opponents cast that target this permanent cost {1} more to cast."
* /
3
{1}{U}{U}
Cancel
Instant
Counter target spell.
--
Celestial Colonnade
Land
Celestial Colonnade enters the battlefield tapped.
{T}: Add {W} or {U}.
{3}{W}{U}: Until end of turn, Celestial Colonnade becomes a 4/4 white and blue Elemental creature with flying and vigilance. It's still a land.
{U}
Combat Research
Enchantment - Aura
Enchant creature
Enchanted creature has "Whenever this creature deals combat damage to a player, draw a card."
As long as enchanted creature is legendary, it gets +1/+1 and has ward {1}. (Whenever enchanted creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays {1}.)
--
Command Tower
Land
{T}: Add one mana of any color in your commander's color identity.
{U}{U}
Counterspell
Instant
Counter target spell.
{1}{W}
Dawn Charm
Instant
Choose one --
• Prevent all combat damage that would be dealt this turn.
• Regenerate target creature.
• Counter target spell that targets you.
{1}{U}
Disdainful Stroke
Instant
Counter target spell with mana value 4 or greater.
{1}{W}
Disenchant
Instant
Destroy target artifact or enchantment.
{2}{U}{U}
Dissipation Field
Enchantment
Whenever a permanent deals damage to you, return it to its owner's hand.
{2}{W}{U}
Dovin Baan
Legendary Planeswalker - Dovin
+1: Until your next turn, up to one target creature gets -3/-0 and its activated abilities can't be activated.
-1: You gain 2 life and draw a card.
-7: You get an emblem with "Your opponents can't untap more than two permanents during their untap steps."
L:
3
{2}{W/U}
Dovin, Hand of Control
Legendary Planeswalker - Dovin
Artifact, instant, and sorcery spells your opponents cast cost {1} more to cast.
-1: Until your next turn, prevent all damage that would be dealt to and dealt by target permanent an opponent controls.
L:
5
{W}{U}
Dramatic Rescue
Instant
Return target creature to its owner's hand. You gain 2 life.
{2}{W}{W}{U}{U}
Dream Trawler
Creature - Sphinx
Flying, lifelink
Whenever you draw a card, Dream Trawler gets +1/+0 until end of turn.
Whenever Dream Trawler attacks, draw a card.
Discard a card: Dream Trawler gains hexproof until end of turn. Tap it.
3 /
5
{1}{U}
Esior, Wardwing Familiar
Legendary Creature - Bird
Flying
Spells your opponents cast that target one or more commanders you control cost {3} more to cast.
Partner (You can have two commanders if both have partner.)
1 /
3
{1}{U}
Essence Scatter
Instant
Counter target creature spell.
{1}{U}{U}
Fatespinner
Creature - Human Wizard
At the beginning of each opponent's upkeep, that player chooses draw step, main phase, or combat phase. The player skips each instance of the chosen step or phase this turn.
1 /
2
{2}{W}
Ghostly Prison
Enchantment
Creatures can't attack you unless their controller pays {2} for each creature they control that's attacking you.
{6}
God-Pharaoh's Statue
Legendary Artifact
Spells your opponents cast cost {2} more to cast.
At the beginning of your end step, each opponent loses 1 life.
{W}{U}
Gold-Forged Thopteryx
Artifact Creature - Dinosaur Thopter
Flying, lifelink
Each legendary permanent you control has ward {2}. (Whenever it becomes the target of a spell or ability an opponent controls, counter it unless that player pays {2}.)
1 /
3
{2}{W}{U}
Grand Arbiter Augustin IV
Legendary Creature - Human Advisor
White spells you cast cost {1} less to cast.
Blue spells you cast cost {1} less to cast.
Spells your opponents cast cost {1} more to cast.
2 /
3
{1}{W}{U}
Gwafa Hazid, Profiteer
Legendary Creature - Human Rogue
{W}{U}, {T}: Put a bribery counter on target creature you don't control. Its controller draws a card.
Creatures with bribery counters on them can't attack or block.
2 /
2
--
Halimar Depths
Land
Halimar Depths enters the battlefield tapped.
When Halimar Depths enters the battlefield, look at the top three cards of your library, then put them back in any order.
{T}: Add {U}.
{W}{U}
Hindering Light
Instant
Counter target spell that targets you or a permanent you control.
Draw a card.
--
Idyllic Beachfront
Land - Plains Island
({T}: Add {W} or {U}.)
Idyllic Beachfront enters the battlefield tapped.
{2}{U}{U}
Insidious Will
Instant
Choose one --
• Counter target spell.
• You may choose new targets for target spell.
• Copy target instant or sorcery spell. You may choose new targets for the copy.
{2}{W}{W}{U}{U}
Isperia, Supreme Judge
Legendary Creature - Sphinx
Flying
Whenever a creature attacks you or a planeswalker you control, you may draw a card.
6 /
4
{3}{U}
Jace's Sanctum
Enchantment
Instant and sorcery spells you cast cost {1} less to cast.
Whenever you cast an instant or sorcery spell, scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.)
{1}{W/U}{W/U}
Jubilant Skybonder
Creature - Human Wizard
Flying
Creatures you control with flying have "Spells your opponents cast that target this creature cost {2} more to cast."
2 /
2
{3}{W}{U}
Kangee, Sky Warden
Legendary Creature - Bird Wizard
Flying, vigilance
Whenever Kangee, Sky Warden attacks, attacking creatures with flying get +2/+0 until end of turn.
Whenever Kangee blocks, blocking creatures with flying get +0/+2 until end of turn.
3 /
3
{3}{U}
Kasmina, Enigmatic Mentor
Legendary Planeswalker - Kasmina
Spells your opponents cast that target a creature or planeswalker you control cost {2} more to cast.
-2: Create a 2/2 blue Wizard creature token. Draw a card, then discard a card.
L:
5
{3}
Kefnet's Monument
Legendary Artifact
Blue creature spells you cast cost {1} less to cast.
Whenever you cast a creature spell, target creature an opponent controls doesn't untap during its controller's next untap step.
{1}{W}{U}
Lawmage's Binding
Enchantment - Aura
Flash
Enchant creature
Enchanted creature can't attack or block, and its activated abilities can't be activated.
{1}{U}
Mana Leak
Instant
Counter target spell unless its controller pays {3}.
{3}{W}
Mangara, the Diplomat
Legendary Creature - Human Cleric
Lifelink
Whenever an opponent attacks with creatures, if two or more of those creatures are attacking you and/or planeswalkers you control, draw a card.
Whenever an opponent casts their second spell each turn, draw a card.
2 /
4
{4}{W}{U}
Medomai the Ageless
Legendary Creature - Sphinx
Flying
Whenever Medomai the Ageless deals combat damage to a player, take an extra turn after this one.
Medomai the Ageless can't attack during extra turns.
4 /
4
{1}{U}
Military Intelligence
Enchantment
Whenever you attack with two or more creatures, draw a card.
{2}{U}
Monastery Siege
Enchantment
As Monastery Siege enters the battlefield, choose Khans or Dragons.
• Khans -- At the beginning of your draw step, draw an additional card, then discard a card.
• Dragons -- Spells your opponents cast that target you or a permanent you control cost {2} more to cast.
{4}{U}{U}
Mu Yanling, Celestial Wind
Legendary Planeswalker - Yanling
+1: Until your next turn, up to one target creature gets -5/-0.
-3: Return up to two target creatures to their owners' hands.
-7: Creatures you control with flying get +5/+5 until end of turn.
L:
5
--
Mystic Sanctuary
Land - Island
({T}: Add {U}.)
Mystic Sanctuary enters the battlefield tapped unless you control three or more other Islands.
When Mystic Sanctuary enters the battlefield untapped, you may put target instant or sorcery card from your graveyard on top of your library.
{1}{U}
Negate
Instant
Counter target noncreature spell.
{3}{W/P}{W/P}
Norn's Annex
Artifact
({W/P} can be paid with either {W} or 2 life.)
Creatures can't attack you or planeswalkers you control unless their controller pays {W/P} for each of those creatures.
{2}{U}
Of One Mind
Sorcery
This spell costs {2} less to cast if you control a Human creature and a non-Human creature.
Draw two cards.
{3}
Oketra's Monument
Legendary Artifact
White creature spells you cast cost {1} less to cast.
Whenever you cast a creature spell, create a 1/1 white Warrior creature token with vigilance.
{U}
Opt
Instant
Scry 1.
Draw a card.
{W}
Path to Exile
Instant
Exile target creature. Its controller may search their library for a basic land card, put that card onto the battlefield tapped, then shuffle.
--
Port Town
Land
As Port Town enters the battlefield, you may reveal a Plains or Island card from your hand. If you don't, Port Town enters the battlefield tapped.
{T}: Add {W} or {U}.
--
Prairie Stream
Land - Plains Island
({T}: Add {W} or {U}.)
Prairie Stream enters the battlefield tapped unless you control two or more basic lands.
{U}
Preordain
Sorcery
Scry 2, then draw a card. (To scry 2, look at the top two cards of your library, then put any number of them on the bottom and the rest on top in any order.)
{2}{U}
Propaganda
Enchantment
Creatures can't attack you unless their controller pays {2} for each creature they control that's attacking you.
{2}{W}
Reidane, God of the Worthy
Legendary Creature - God
Flying, vigilance
Snow lands your opponents control enter the battlefield tapped.
Noncreature spells your opponents cast with mana value 4 or greater cost {2} more to cast.
2 /
3
--
Valkmira, Protector's Shield
Legendary Artifact
If a source an opponent controls would deal damage to you or a permanent you control, prevent 1 of that damage.
Whenever you or another permanent you control becomes the target of a spell or ability an opponent controls, counter that spell or ability unless its controller pays {1}.
2 /
3
{W}{U}{U}
Render Silent
Instant
Counter target spell. Its controller can't cast spells this turn.
{2}{W}{W}
Return to Dust
Instant
Exile target artifact or enchantment. If you cast this spell during your main phase, you may exile up to one other target artifact or enchantment.
{1}
Sol Ring
Artifact
{T}: Add {C}{C}.
{3}{W}{W}
Spelltithe Enforcer
Creature - Elephant Wizard
Whenever an opponent casts a spell, that player sacrifices a permanent unless they pay {1}.
3 /
3
{6}{U}{U}
Sphinx of the Second Sun
Creature - Sphinx
Flying
At the beginning of your postcombat main phase, there is an additional beginning phase after this phase. (The beginning phase includes the untap, upkeep, and draw steps.)
6 /
6
{W}{U}
Staggering Insight
Enchantment - Aura
Enchant creature
Enchanted creature gets +1/+1 and has lifelink and "Whenever this creature deals combat damage to a player, draw a card."
{W}
Surge of Salvation
Instant
You and permanents you control gain hexproof until end of turn. Prevent all damage that black and/or red sources would deal to creatures you control this turn.
{1}{W}
Take Vengeance
Sorcery
Destroy target tapped creature.
{3}{W}{U}
Teferi's Moat
Enchantment
As Teferi's Moat enters the battlefield, choose a color.
Creatures of the chosen color without flying can't attack you.
--
Temple of Enlightenment
Land
Temple of Enlightenment enters the battlefield tapped.
When Temple of Enlightenment enters the battlefield, scry 1.
{T}: Add {W} or {U}.
{2}{W}{W}{U}
Time Wipe
Sorcery
Return a creature you control to its owner's hand, then destroy all creatures.
{W}{U}
Unsettled Mariner
Creature - Shapeshifter
Changeling (This card is every creature type.)
Whenever you or a permanent you control becomes the target of a spell or ability an opponent controls, counter that spell or ability unless its controller pays {1}.
2 /
2
{2}{U}
Unwind
Instant
Counter target noncreature spell. Untap up to three lands.
{U}
Wash Away
Instant
Cleave {1}{U}{U} (You may cast this spell for its cleave cost. If you do, remove the words in square brackets.)
Counter target spell [that wasn't cast from its owner's hand].
{W}{U}
Watcher of the Spheres
Creature - Bird Wizard
Flying
Creature spells with flying you cast cost {1} less to cast.
Whenever another creature with flying enters the battlefield under your control, Watcher of the Spheres gets +1/+1 until end of turn.
2 /
2
{2}{U}
Winged Words
Sorcery
This spell costs {1} less to cast if you control a creature with flying.
Draw two cards.
{1}{U}{U}
Wizard's Retort
Instant
This spell costs {1} less to cast if you control a Wizard.
Counter target spell.
{2}{W}{W}
Wrath of God
Sorcery
Destroy all creatures. They can't be regenerated.
{1}{U}{U}
You Find the Villains' Lair
Instant
Choose one --
• Foil Their Scheme -- Counter target spell.
• Learn Their Secrets -- Draw two cards, then discard two cards.