The List

Hypothesizzle

Hypothesizzle {3}{U}{R}

Instant
Draw two cards. Then you may discard a nonland card. When you do, Hypothesizzle deals 4 damage to target creature.
"It's like blowing up an arcane library in a thermobaric explosion. But in a good way."
—Bori Andon, Izzet blastseeker
Join Shields

Join Shields {3}{G}{W}

Instant
Untap all creatures you control. They gain hexproof and indestructible until end of turn.
"We are the shield that never breaks, the bough that never burns, the song that can never be silenced."
Lazav, the Multifarious

Lazav, the Multifarious {U}{B}

Legendary Creature - Shapeshifter
When Lazav, the Multifarious enters, surveil 1.
{X}: Lazav, the Multifarious becomes a copy of target creature card in your graveyard with mana value X, except its name is Lazav, the Multifarious, it's legendary in addition to its other types, and it has this ability.
1/3
Niv-Mizzet, Parun

Niv-Mizzet, Parun {U}{U}{U}{R}{R}{R}

Legendary Creature - Dragon Wizard
This spell can't be countered.
Flying
Whenever you draw a card, Niv-Mizzet, Parun deals 1 damage to any target.
Whenever a player casts an instant or sorcery spell, you draw a card.
5/5
Ochran Assassin

Ochran Assassin {1}{B}{G}

Creature - Elf Assassin
Deathtouch
All creatures able to block Ochran Assassin do so.
"The dagger is just a distraction. I carry the real killer in a vial at my side."
1/1
Rosemane Centaur

Rosemane Centaur {3}{G}{W}

Creature - Centaur Soldier
Convoke
Vigilance
"I long for peaceful times, when I may tend to my garden instead of our borders."
4/4
Thought Erasure

Thought Erasure {U}{B}

Sorcery
Target opponent reveals their hand. You choose a nonland card from it. That player discards that card.
Surveil 1.
"It's truly the highest honor, isn't it? To be remembered? Pity for you."
Wee Dragonauts

Wee Dragonauts {1}{U}{R}

Creature - Faerie Wizard
Flying
Whenever you cast an instant or sorcery spell, Wee Dragonauts gets +2/+0 until end of turn.
"Something's causing electrospheric disruption in the blazekite's spire-vanes. Find the cause, and tell them to keep it up!"
—Juzba, Izzet tinker
1/3
Expansion

Expansion {U/R}{U/R}

Instant
Copy target instant or sorcery spell with mana value 4 or less. You may choose new targets for the copy.
Card has other part: Explosion
Explosion

Explosion {X}{U}{U}{R}{R}

Instant
Explosion deals X damage to any target. Target player draws X cards.
Card has other part: Expansion
Chromatic Lantern

Chromatic Lantern {3}

Artifact
Lands you control have "{T}: Add one mana of any color."
{T}: Add one mana of any color.
By guild tradition, any puddle of multicolored light on the cobblestones can serve as neutral ground.
Boros Guildgate

Boros Guildgate

Land - Gate
This land enters tapped.
{T}: Add {R} or {W}.
"The more trust breaks down, the more we must throw open the front gates."
—Aurelia
Dimir Guildgate

Dimir Guildgate

Land - Gate
This land enters tapped.
{T}: Add {U} or {B}.
"Every guild dreads infiltration. I should know—I've been a member of all of them."
—Lazav
Gateway Plaza

Gateway Plaza

Land - Gate
Gateway Plaza enters tapped.
When Gateway Plaza enters, sacrifice it unless you pay {1}.
{T}: Add one mana of any color.
The Chamber of the Guildpact stands as a reminder that even the bitterest struggles can end in cooperation.
Golgari Guildgate

Golgari Guildgate

Land - Gate
This land enters tapped.
{T}: Add {B} or {G}.
"Shut the gates. In the Underrealm we will outlast the coming doom."
—Vraska
Izzet Guildgate

Izzet Guildgate

Land - Gate
This land enters tapped.
{T}: Add {U} or {R}.
Every laboratory buzzes with new experiments, each a piece of Ral's ambitious project.
Selesnya Guildgate

Selesnya Guildgate

Land - Gate
This land enters tapped.
{T}: Add {G} or {W}.
"Everyone who crosses that threshold is our most cherished friend. Everyone who crosses it again is our bitterest enemy."
—Trostani
Candlelight Vigil

Candlelight Vigil {3}{W}

Enchantment - Aura
Enchant creature
Enchanted creature gets +3/+2 and has vigilance.
Selesnya guildmages do not sleep so the rest of the conclave can.
Capture Sphere

Capture Sphere {3}{U}

Enchantment - Aura
Flash
Enchant creature
When Capture Sphere enters, tap enchanted creature.
Enchanted creature doesn't untap during its controller's untap step.
Chemister's Insight

Chemister's Insight {3}{U}

Instant
Draw two cards.
Jump-start
"My specialty is theoretical universal limits and ways to circumvent them."
Citywatch Sphinx

Citywatch Sphinx {5}{U}

Creature - Sphinx
Flying
When Citywatch Sphinx dies, surveil 2.
All those who trade in questions must answer to the Dimir.
5/4
Dazzling Lights

Dazzling Lights {U}

Instant
Target creature gets -3/-0 until end of turn.
Surveil 2.
Leapfrog

Leapfrog {2}{U}

Creature - Frog
Leapfrog has flying as long as you've cast an instant or sorcery spell this turn.
"Most compete for insects at street level. Some dwell near Izzet laboratories and ride the thermal updrafts."
—Yolov, Simic bioengineer
3/1
Maximize Altitude

Maximize Altitude {U}

Sorcery
Target creature gets +1/+1 and gains flying until end of turn.
Jump-start
Murmuring Mystic

Murmuring Mystic {3}{U}

Creature - Human Wizard
Whenever you cast an instant or sorcery spell, create a 1/1 blue Bird Illusion creature token with flying.
Rumors float through the city like crows, alighting on citizens seemingly at random.
1/5