Watcher in the Mist

Flying
When this creature enters, surveil 2. (Look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.)

Snapback

You may exile a blue card from your hand rather than pay this spell's mana cost.
Return target creature to its owner's hand.

Frost Lynx

When this creature enters, tap target creature an opponent controls. That creature doesn't untap during its controller's next untap step.

Foresee

Swamp

Erratic Visionary

{1}{U}, {T}: Draw a card, then discard a card.

Frost Trickster

Flying
When this creature enters, tap target creature an opponent controls. That creature doesn't untap during its controller's next untap step.

Phase Dolphin

Whenever this creature attacks, another target attacking creature can't be blocked this turn.

Skymarch Bloodletter

Flying
When this creature enters, target opponent loses 1 life and you gain 1 life.

Maalfeld Twins

When this creature dies, create two 2/2 black Zombie creature tokens.

Universal Solvent

{7}, {T}, Sacrifice this artifact: Destroy target permanent.

Eyeblight Assassin

When this creature enters, target creature an opponent controls gets -1/-1 until end of turn.

Lost Legion

When this creature enters, 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.)

Seeker of Insight

{T}: Draw a card, then discard a card. Activate only if you've cast a noncreature spell this turn.

Soothsayer Adept

Cloudreader Sphinx

Flying
When this creature enters, 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.)

Island

Sage's Row Denizen

Whenever another blue creature you control enters, target player mills two cards.

Araumi of the Dead Tide

{T}, Exile cards from your graveyard equal to the number of opponents you have: Target creature card in your graveyard gains encore until end of turn. The encore cost is equal to its mana cost. (Exile the creature card and pay its mana cost: For each opponent, create a token copy that attacks that opponent this turn if able. They gain haste. Sacrifice them at the beginning of the next end step. Activate only as a sorcery.)

Tithebearer Giant

When this creature enters, you draw a card and you lose 1 life.

Boneclad Necromancer

When this creature enters, you may exile target creature card from a graveyard. If you do, create a 2/2 black Zombie creature token.

Homarid Explorer

When this creature enters, target player mills four cards.

Karfell Kennel-Master

When this creature enters, up to two target creatures each get +1/+0 and gain indestructible until end of turn. (Damage and effects that say "destroy" don't destroy them.)

Phyrexian Rager

Strategic Planning

Look at the top three cards of your library. Put one of them into your hand and the rest into your graveyard.

Spinal Centipede

When this creature dies, put a +1/+1 counter on target creature you control.

Run Away Together

Choose two target creatures controlled by different players. Return those creatures to their owners' hands.

Liliana's Steward

{T}, Sacrifice this creature: Target opponent discards a card. Activate only as a sorcery.

Silumgar Scavenger

Flying
Exploit (When this creature enters, you may sacrifice a creature.)
Whenever another creature you control dies, put a +1/+1 counter on this creature. It gains haste until end of turn if it exploited that creature.

Nocturnal Feeder

Flying
When this creature dies, each opponent loses 2 life and you gain 2 life.

Audacious Thief

Whenever this creature attacks, you draw a card and you lose 1 life.

Blight-Breath Catoblepas

When this creature enters, target creature an opponent controls gets -X/-X until end of turn, where X is your devotion to black. (Each {B} in the mana costs of permanents you control counts toward your devotion to black.)

Crow of Dark Tidings

Flying
When this creature enters or dies, mill two cards. (Put the top two cards of your library into your graveyard.)

Spire Mangler

Flash
Flying
When this creature enters, target creature you control with flying gets +2/+0 until end of turn.

Omenspeaker

Bushmeat Poacher

{1}, {T}, Sacrifice another creature: You gain life equal to the sacrificed creature's toughness. Draw a card.

Sift

Grim Physician

When this creature dies, target creature an opponent controls gets -1/-1 until end of turn.

Discordant Piper

When this creature dies, create a 0/1 white Goat creature token.

Towering-Wave Mystic

Whenever this creature deals damage, target player mills that many cards.

Peace Strider

When this creature enters, you gain 3 life.

Serum Raker

Flying
When this creature dies, each player discards a card.

Dimir Informant

When this creature enters, surveil 2. (Look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.)

Bottle Golems

Trample
When this creature dies, you gain life equal to its power.

Charmed Sleep

Enchant creature
When this Aura enters, tap enchanted creature.
Enchanted creature doesn't untap during its controller's untap step.

Sage's Row Savant

Koma's Faithful

Lifelink (Damage dealt by this creature also causes you to gain that much life.)
When this creature dies, each player mills three cards. (They each put the top three cards of their library into their graveyard.)

Aven Surveyor

Flying
When this creature enters, choose one —
• Put a +1/+1 counter on this creature.
• Return target creature to its owner's hand.

Prying Eyes

Chillbringer

Flying
When this creature enters, tap target creature an opponent controls. It doesn't untap during its controller's next untap step.

Gravedigger

When this creature enters, you may return target creature card from your graveyard to your hand.

Library Larcenist

Whenever this creature attacks, draw a card.

Roaming Ghostlight

Flying
When this creature enters, return up to one target non-Spirit creature to its owner's hand.

Skeleton Archer

When this creature enters, it deals 1 damage to any target.

Totally Lost

Put target nonland permanent on top of its owner's library.

Aviation Pioneer

When this creature enters, create a 1/1 colorless Thopter artifact creature token with flying.

Kitesail Skirmisher

Flying
Whenever this creature attacks, another target creature attacking the same player or planeswalker gains flying until end of turn.
Encore {4}{U} ({4}{U}, Exile this card from your graveyard: For each opponent, create a token copy that attacks that opponent this turn if able. They gain haste. Sacrifice them at the beginning of the next end step. Activate only as a sorcery.)

Dark Bargain

Look at the top three cards of your library. Put two of them into your hand and the other into your graveyard. Dark Bargain deals 2 damage to you.

Deathbloom Thallid

When this creature dies, create a 1/1 green Saproling creature token.

Ior Ruin Expedition

Landfall — Whenever a land you control enters, you may put a quest counter on this enchantment.
Remove three quest counters from this enchantment and sacrifice it: Draw two cards.

Choking Tethers

Tap up to four target creatures.
Cycling {1}{U} ({1}{U}, Discard this card: Draw a card.)
When you cycle this card, you may tap target creature.

Waterfall Aerialist

Flying
Ward {2} (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays {2}.)

Defiant Salvager

Sacrifice an artifact or creature: Put a +1/+1 counter on this creature. Activate only as a sorcery.

Octoprophet

Pop Quiz

Draw a card.
Learn. (You may reveal a Lesson card you own from outside the game and put it into your hand, or discard a card to draw a card.)