The List

Cloak of Feathers

Cloak of Feathers {U}

Sorcery
Target creature gains flying until end of turn.
Draw a card.
A thousand feathers from a thousand birds, sewn with magic and song.
Cloud Dragon

Cloud Dragon {5}{U}

Creature - Illusion Dragon
Flying
This creature can block only creatures with flying.
5/4
Command of Unsummoning

Command of Unsummoning {2}{U}

Instant
Cast this spell only during the declare attackers step and only if you've been attacked this step.
Return one or two target attacking creatures to their owner's hand.
Exhaustion

Exhaustion {2}{U}

Sorcery
Creatures and lands target opponent controls don't untap during their next untap step.
Flux

Flux {2}{U}

Sorcery
Each player discards any number of cards, then draws that many cards.
Draw a card.
Horned Turtle

Horned Turtle {2}{U}

Creature - Turtle
1/4
Man-o'-War

Man-o'-War {2}{U}

Creature - Jellyfish
When this creature enters, return target creature to its owner's hand.
2/2
Merfolk of the Pearl Trident

Merfolk of the Pearl Trident {U}

Creature - Merfolk
Are merfolk humans with fins, or are humans merfolk with feet?
1/1
Omen

Omen {1}{U}

Sorcery
Look at the top three cards of your library, then put them back in any order. You may shuffle.
Draw a card.
Owl Familiar

Owl Familiar {1}{U}

Creature - Bird
Flying
When this creature enters, draw a card, then discard a card.
1/1
Sorcerous Sight

Sorcerous Sight {U}

Sorcery
Look at target opponent's hand.
Draw a card.
Do not react; anticipate.
Storm Crow

Storm Crow {1}{U}

Creature - Bird
Flying
Storm crow descending, winter unending. Storm crow departing, summer is starting.
1/2
Related cards: Attempted Murder Crow Storm Murmuration
Symbol of Unsummoning

Symbol of Unsummoning {2}{U}

Sorcery
Return target creature to its owner's hand.
Draw a card.
". . . inviting the soul to wander for a spell in abysses of solitude . . . ."
—Kate Chopin, The Awakening
Thing from the Deep

Thing from the Deep {6}{U}{U}{U}

Creature - Leviathan
Whenever this creature attacks, sacrifice it unless you sacrifice an Island.
Seafarers fear sailing off the world's edge not so much as down its gullet.
9/9
Time Ebb

Time Ebb {2}{U}

Sorcery
Put target creature on top of its owner's library.
Like the tide, time both ebbs and flows.
Arrogant Vampire

Arrogant Vampire {3}{B}{B}

Creature - Vampire
Flying
Charm and grace may hide a foul heart.
4/3
Assassin's Blade

Assassin's Blade {1}{B}

Instant
Cast this spell only during the declare attackers step and only if you've been attacked this step.
Destroy target nonblack attacking creature.
Cruel Tutor

Cruel Tutor {2}{B}

Sorcery
Search your library for a card, then shuffle and put that card on top. You lose 2 life.
The more you pay for the lesson, the better you'll remember it.
Feral Shadow

Feral Shadow {2}{B}

Creature - Nightstalker
Flying
Not all shadows are cast by light—some are cast by darkness.
2/1
Related card: Urborg Panther
Dryad Militant

Dryad Militant {G/W}

Creature - Dryad Soldier
If an instant or sorcery card would be put into a graveyard from anywhere, exile it instead.
2/1
Ancient Excavation

Ancient Excavation {2}{U}{B}

Instant
Draw cards equal to the number of cards in your hand, then discard a card for each card drawn this way.
Basic landcycling {2}
Ethereal Armor

Ethereal Armor {W}

Enchantment - Aura
Enchant creature
Enchanted creature gets +1/+1 for each enchantment you control and has first strike.
Metal is scarce, smiths are pricey, and plate mail is heavy.
Related cards: Giant Secrets Stormkeld Curator
Hunted Dragon

Hunted Dragon {3}{R}{R}

Creature - Dragon
Flying, haste
When this creature enters, target opponent creates three 2/2 white Knight creature tokens with first strike.
The knights see a mighty quarry. The dragon sees breakfast, lunch, and dinner.
6/6
Mindmoil

Mindmoil {4}{R}

Enchantment
Whenever you cast a spell, put the cards in your hand on the bottom of your library in any order, then draw that many cards.
"My criticism of the Izzet is that their impulse for learning seems too much like impulse and too little like learning."
—Trigori, Azorius senator
Warp World

Warp World {5}{R}{R}{R}

Sorcery
Each player shuffles all permanents they own into their library, then reveals that many cards from the top of their library. Each player puts all artifact, creature, and land cards revealed this way onto the battlefield, then does the same for enchantment cards, then puts all cards revealed this way that weren't put onto the battlefield on the bottom of their library.