The List

Tawnos, Urza's Apprentice

Tawnos, Urza's Apprentice {U}{R}

Legendary Creature - Human Artificer
Haste
{U}{R}, {T}: Copy target activated or triggered ability you control from an artifact source. You may choose new targets for the copy.
"My master believes anything is achievable."
1/3
Thantis, the Warweaver

Thantis, the Warweaver {3}{B}{R}{G}

Legendary Creature - Spider
Vigilance, reach
All creatures attack each combat if able.
Whenever a creature attacks you or a planeswalker you control, put a +1/+1 counter on Thantis.
She spins a web few can resist. Its sweet aroma sparks chaos in every heart.
5/5
Xantcha, Sleeper Agent

Xantcha, Sleeper Agent {1}{B}{R}

Legendary Creature - Phyrexian Minion
Xantcha enters under the control of an opponent of your choice.
Xantcha attacks each combat if able and can't attack its owner or planeswalkers its owner controls.
{3}: Xantcha's controller loses 2 life and you draw a card. Any player may activate this ability.
5/5
Yuriko, the Tiger's Shadow

Yuriko, the Tiger's Shadow {1}{U}{B}

Legendary Creature - Human Ninja
Commander ninjutsu {U}{B}
Whenever a Ninja you control deals combat damage to a player, reveal the top card of your library and put that card into your hand. Each opponent loses life equal to that card's mana value.
1/3
Coveted Jewel

Coveted Jewel {6}

Artifact
When this artifact enters, draw three cards.
{T}: Add three mana of any one color.
Whenever one or more creatures an opponent controls attack you and aren't blocked, that player draws three cards and gains control of this artifact. Untap it.
Endless Atlas

Endless Atlas {2}

Artifact
{2}, {T}: Draw a card. Activate only if you control three or more lands with the same name.
Guarded by cartographers, disdained by warlords, coveted by adventurers.
Aminatou's Augury

Aminatou's Augury {6}{U}{U}

Sorcery
Exile the top eight cards of your library. You may put a land card from among them onto the battlefield. Until end of turn, for each nonland card type, you may cast a spell of that type from among the exiled cards without paying its mana cost.
Crib Swap

Crib Swap {2}{W}

Kindred Instant - Shapeshifter
Changeling
Exile target creature. Its controller creates a 1/1 colorless Shapeshifter creature token with changeling.
Lightform

Lightform {1}{W}{W}

Enchantment
When this enchantment enters, it becomes an Aura with enchant creature. Manifest the top card of your library and attach this enchantment to it.
Enchanted creature has flying and lifelink.
Sage's Reverie

Sage's Reverie {3}{W}

Enchantment - Aura
Enchant creature
When this Aura enters, draw a card for each Aura you control that's attached to a creature.
Enchanted creature gets +1/+1 for each Aura you control that's attached to a creature.
Archetype of Imagination

Archetype of Imagination {4}{U}{U}

Enchantment Creature - Human Wizard
Creatures you control have flying.
Creatures your opponents control lose flying and can't have or gain flying.
"Is it not the embodiment of our aspirations?"
—Prokopios, astronomer of Meletis
3/2
Djinn of Wishes

Djinn of Wishes {3}{U}{U}

Creature - Djinn
Flying
This creature enters with three wish counters on it.
{2}{U}{U}, Remove a wish counter from this creature: Reveal the top card of your library. You may play that card without paying its mana cost. If you don't, exile it.
4/4
Dream Cache

Dream Cache {2}{U}

Sorcery
Draw three cards, then put two cards from your hand both on top of your library or both on the bottom of your library.
Dreams' riches are easily spent.
—Suq'Ata adage
Eel Umbra

Eel Umbra {1}{U}

Enchantment - Aura
Flash
Enchant creature
Enchanted creature gets +1/+1.
Umbra armor
Ninja of the Deep Hours

Ninja of the Deep Hours {3}{U}

Creature - Human Ninja
Ninjutsu {1}{U}
Whenever this creature deals combat damage to a player, you may draw a card.
2/2
Portent

Portent {U}

Sorcery
Look at the top three cards of target player's library, then put them back in any order. You may have that player shuffle.
Draw a card at the beginning of the next turn's upkeep.
Predict

Predict {1}{U}

Instant
Choose a card name, then target player mills a card. If a card with the chosen name was milled this way, you draw two cards. Otherwise, you draw a card.
Dark Withering

Dark Withering {4}{B}{B}

Instant
Destroy target nonblack creature.
Madness {B}
Bone Miser

Bone Miser {4}{B}

Creature - Zombie Wizard
Whenever you discard a creature card, create a 2/2 black Zombie creature token.
Whenever you discard a land card, add {B}{B}.
Whenever you discard a noncreature, nonland card, draw a card.
4/4
Great Oak Guardian

Great Oak Guardian {5}{G}

Creature - Treefolk
Flash
Reach
When this creature enters, creatures target player controls get +2/+2 until end of turn. Untap them.
His roots reach deep and grip hard.
4/5
Seedborn Muse

Seedborn Muse {3}{G}{G}

Creature - Spirit
Untap all permanents you control during each other player's untap step.
"Her voice is the wilderness, savage and pure."
—Kamahl, druid acolyte
2/4
K'rrik, Son of Yawgmoth

K'rrik, Son of Yawgmoth {4}{B/P}{B/P}{B/P}

Legendary Creature - Phyrexian Horror Minion
Lifelink
For each {B} in a cost, you may pay 2 life rather than pay that mana.
Whenever you cast a black spell, put a +1/+1 counter on K'rrik.
2/2
Lightning Greaves

Lightning Greaves {2}

Artifact - Equipment
Equipped creature has haste and shroud.
Equip {0}
After lightning struck the cliffs, the ore became iron, the iron became steel, and the steel became greaves. The lightning never left.
Related card: Masterpiece Vault
Mimic Vat

Mimic Vat {3}

Artifact
Imprint — Whenever a nontoken creature dies, you may exile that card. If you do, return each other card exiled with this artifact to its owner's graveyard.
{3}, {T}: Create a token that's a copy of a card exiled with this artifact. It gains haste. Exile it at the beginning of the next end step.
Rix Maadi, Dungeon Palace

Rix Maadi, Dungeon Palace

Land
{T}: Add {C}.
{1}{B}{R}, {T}: Each player discards a card. Activate only as a sorcery.
Even miles away, if you put your ear to the sewer vents, you can hear the screams and the tempestuous laughter.