Celestial Messenger

Flash (You may cast this card any time you could cast an instant.)
Flying
This creature gets +1/+1 as long as you control a Yanling planeswalker.

Pilgrim of the Ages

When this creature enters, you may search your library for a basic Plains card, reveal it, put it into your hand, then shuffle.
{6}: Return this card from your graveyard to your hand.

Wayfarer's Bauble

{2}, {T}, Sacrifice this artifact: Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.

Niblis of Dusk

Flying
Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)

Hopeful Eidolon

Bestow {3}{W} (If you cast this card for its bestow cost, it's an Aura spell with enchant creature. It becomes a creature again if it's not attached to a creature.)
Lifelink (Damage dealt by this creature also causes you to gain that much life.)
Enchanted creature gets +1/+1 and has lifelink.

Vassal Soul

Eidolon of Philosophy

{6}{U}, Sacrifice this creature: Draw three cards.

Triplicate Spirits

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.)
Create three 1/1 white Spirit creature tokens with flying.

Nine-Tail White Fox

Whenever this creature deals combat damage to a player, draw a card.

Ravenform

Exile target artifact or creature. Its controller creates a 1/1 blue Bird creature token with flying.
Foretell {U} (During your turn, you may pay {2} and exile this card from your hand face down. Cast it on a later turn for its foretell cost.)

Arcane Denial

Counter target spell. Its controller may draw up to two cards at the beginning of the next turn's upkeep.
You draw a card at the beginning of the next turn's upkeep.

Shinen of Stars' Light

First strike
Channel — {1}{W}, Discard this card: Target creature gains first strike until end of turn.

Moorland Drifter

Delirium — This creature has flying as long as there are four or more card types among cards in your graveyard.

Moon Heron

Journey to Nowhere

When this enchantment enters, exile target creature.
When this enchantment leaves the battlefield, return the exiled card to the battlefield under its owner's control.

Quillmane Baku

Whenever you cast a Spirit or Arcane spell, you may put a ki counter on this creature.
{1}, {T}, Remove X ki counters from this creature: Return target creature with mana value X or less to its owner's hand.

Stormbound Geist

Flying
This creature can block only creatures with flying.
Undying (When this creature dies, if it had no +1/+1 counters on it, return it to the battlefield under its owner's control with a +1/+1 counter on it.)

Geist Snatch

Counter target creature spell. Create a 1/1 blue Spirit creature token with flying.

Kami of Ancient Law

Sacrifice this creature: Destroy target enchantment.

Shinen of Flight's Wings

Flying
Channel — {U}, Discard this card: Target creature gains flying until end of turn.

Arcane Signet

{T}: Add one mana of any color in your commander's color identity.

Shimmering Glasskite

Flying
Whenever this creature becomes the target of a spell or ability for the first time each turn, counter that spell or ability.

Moonlight Geist

Flying
{3}{W}: Prevent all combat damage that would be dealt to and dealt by this creature this turn.

Veil of Secrecy

Target creature gains shroud until end of turn and can't be blocked this turn. (A creature with shroud can't be the target of spells or abilities.)
Splice onto Arcane—Return a blue creature you control to its owner's hand. (As you cast an Arcane spell, you may reveal this card from your hand and pay its splice cost. If you do, add this card's effects to that spell.)

Fade Away

For each creature, its controller sacrifices a permanent of their choice unless they pay {1}.

Ghost Ship

Flying
{U}{U}{U}: Regenerate this creature.

Counterspell

Waxmane Baku

Whenever you cast a Spirit or Arcane spell, you may put a ki counter on this creature.
{1}, Remove X ki counters from this creature: Tap X target creatures.

Emissary of the Sleepless

Flying
When this creature enters, if a creature died this turn, create a 1/1 white Spirit creature token with flying.

Ideas Unbound

Draw three cards. Discard three cards at the beginning of the next end step.

Spectral Reserves

Create two 1/1 white Spirit creature tokens with flying. You gain 2 life.

Roaming Ghostlight

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

Guardian of the Guildpact

Moonlit Strider

Sacrifice this creature: Target creature you control gains protection from the color of your choice until end of turn.
Soulshift 3 (When this creature dies, you may return target Spirit card with mana value 3 or less from your graveyard to your hand.)

Hundred-Talon Kami

Flying
Soulshift 4 (When this creature dies, you may return target Spirit card with mana value 4 or less from your graveyard to your hand.)

Azorius Cluestone

{T}: Add {W} or {U}.
{W}{U}, {T}, Sacrifice this artifact: Draw a card.

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.)

Ribbons of the Reikai

Tattered Haunter

Flying
This creature can block only creatures with flying.

Custodi Squire

Flying
Will of the council — When this creature enters, starting with you, each player votes for an artifact, creature, or enchantment card in your graveyard. Return each card with the most votes or tied for most votes to your hand.

Drogskol Captain

Flying
Other Spirit creatures you control get +1/+1 and have hexproof. (They can't be the targets of spells or abilities your opponents control.)

Island

Otherworldly Journey

Exile target creature. At the beginning of the next end step, return that card to the battlefield under its owner's control with a +1/+1 counter on it.

Vessel of Ephemera

{2}{W}, Sacrifice this enchantment: Create two 1/1 white Spirit creature tokens with flying.

Brainstorm

Draw three cards, then put two cards from your hand on top of your library in any order.

Valor of the Worthy

Enchant creature
Enchanted creature gets +1/+1.
When enchanted creature leaves the battlefield, create a 1/1 white Spirit creature token with flying.

Voiceless Spirit

Azorius Signet

Scion of Ugin

Geist of the Moors

Winged Words

This spell costs {1} less to cast if you control a creature with flying.
Draw two cards.

Keening Apparition

Stonerise Spirit

Flying
{4}, Exile a card from your graveyard: Target creature gains flying until end of turn.

Peer Through Depths

Look at the top five cards of your library. You may reveal an instant or sorcery card from among them and put it into your hand. Put the rest on the bottom of your library in any order.

Torii Watchward

Vigilance (Attacking doesn't cause this creature to tap.)
Soulshift 4 (When this creature dies, you may return target Spirit card with mana value 4 or less from your graveyard to your hand.)

Guardian of Pilgrims

When this creature enters, target creature gets +1/+1 until end of turn.

Martyr's Soul

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.)
When this creature enters, if you control no tapped lands, put two +1/+1 counters on it.

Teller of Tales

Flying
Whenever you cast a Spirit or Arcane spell, you may tap or untap target creature.

Snow-Covered Plains

Revered Dead

Scry 1. (Look at the top card of your library. You may put that card on the bottom.)
Draw a card.

Terashi's Grasp

Destroy target artifact or enchantment. You gain life equal to its mana value.

Callous Deceiver

{1}: Look at the top card of your library.
{2}: Reveal the top card of your library. If it's a land card, this creature gets +1/+0 and gains flying until end of turn. Activate only once each turn.

Dreamcatcher

Whenever you cast a Spirit or Arcane spell, you may sacrifice this creature. If you do, draw a card.

Sanctum Spirit

Lifelink
Discard a historic card: This creature gains indestructible until end of turn. (Artifacts, legendaries, and Sagas are historic.)

Lantern Kami

Chapel Geist

Spiritual Visit

Create a 1/1 colorless Spirit creature token.
Splice onto Arcane {W} (As you cast an Arcane spell, you may reveal this card from your hand and pay its splice cost. If you do, add this card's effects to that spell.)

Rousing of Souls

Parley — Each player reveals the top card of their library. For each nonland card revealed this way, you create a 1/1 white Spirit creature token with flying. Then each player draws a card.

Soulsworn Jury

Defender (This creature can't attack.)
{1}{U}, Sacrifice this creature: Counter target creature spell.