Spectral Rider

Intimidate (This creature can't be blocked except by artifact creatures and/or creatures that share a color with it.)

Kami of Old Stone

Voiceless Spirit

Pacifism

Enchant creature
Enchanted creature can't attack or block.

Silverchase Fox

{1}{W}, Sacrifice Silverchase Fox: Exile target enchantment.

Angel of Flight Alabaster

Flying
At the beginning of your upkeep, return target Spirit card from your graveyard to your hand.

Suture Spirit

Flying
{W/B}{W/B}{W/B}: Regenerate target creature.

Intangible Virtue

Creature tokens you control get +1/+1 and have vigilance.

Chapel Geist

Gallows Warden

Flying
Other Spirit creatures you control get +0/+1.

Spirit en-Dal

Shadow (This creature can block or be blocked by only creatures with shadow.)
Forecast — {1}{W}, Reveal Spirit en-Dal from your hand: Target creature gains shadow until end of turn. (Activate only during your upkeep and only once each turn.)

Plains

Patron of the Kitsune

Fox offering (You may cast this spell any time you could cast an instant by sacrificing a Fox and paying the difference in mana costs between this and the sacrificed Fox. Mana cost includes color.)
Whenever a creature attacks, you may gain 1 life.

Midnight Haunting

Create two 1/1 white Spirit creature tokens with flying.

Ghostly Possession

Enchant creature
Enchanted creature has flying.
Prevent all combat damage that would be dealt to and dealt by enchanted creature.

Baku Altar

Whenever you cast a Spirit or Arcane spell, you may put a ki counter on Baku Altar.
{2}, {T}, Remove a ki counter from Baku Altar: Create a 1/1 colorless Spirit creature token.

Spirit Mantle

Enchant creature
Enchanted creature gets +1/+1 and has protection from creatures.

Angel's Mercy

Divine Favor

Enchant creature
When Divine Favor enters, you gain 3 life.
Enchanted creature gets +1/+3.

Celestial Crusader

Flash
Split second (As long as this spell is on the stack, players can't cast spells or activate abilities that aren't mana abilities.)
Flying
Other white creatures get +1/+1.

Geist-Honored Monk

Vigilance
Geist-Honored Monk's power and toughness are each equal to the number of creatures you control.
When Geist-Honored Monk enters, create two 1/1 white Spirit creature tokens with flying.

Soulbound Guardians

Doomed Traveler

When Doomed Traveler dies, create a 1/1 white Spirit creature token with flying.

Ghosts of the Innocent

If a source would deal damage to a permanent or player, it deals half that damage, rounded down, to that permanent or player instead.

Ghost Warden

{T}: Target creature gets +1/+1 until end of turn.

Pale Wayfarer

{2}{W}{W}, {Q}: Target creature gains protection from the color of its controller's choice until end of turn. ({Q} is the untap symbol.)

Noble Vestige

Flying
{T}: Prevent the next 1 damage that would be dealt to target player or planeswalker this turn.

Mausoleum Guard

When Mausoleum Guard dies, create two 1/1 white Spirit creature tokens with flying.

Twilight Drover

Whenever a creature token leaves the battlefield, put a +1/+1 counter on Twilight Drover.
{2}{W}, Remove a +1/+1 counter from Twilight Drover: Create two 1/1 white Spirit creature tokens with flying.