Enchanted creature gets +1/+1 for each Plains you control and has flying.
{W}
Blessed Breath
Instant - Arcane
Target creature you control gains protection from the color of your choice until end of turn.
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.)
{3}{W}{W}
Cathars' Crusade
Enchantment
Whenever a creature enters the battlefield under your control, put a +1/+1 counter on each creature you control.
{2}{W}{W}
Celestial Crusader
Creature - Spirit
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.
2 /
2
{3}{W}{W}
Dictate of Heliod
Enchantment
Flash
Creatures you control get +2/+2.
{5}{W}{W}
Drogskol Cavalry
Creature - Spirit Knight
Flying
Whenever another Spirit enters the battlefield under your control, you gain 2 life.
{3}{W}: Create a 1/1 white Spirit creature token with flying.
4 /
4
--
Emeria, the Sky Ruin
Land
Emeria, the Sky Ruin enters the battlefield tapped.
At the beginning of your upkeep, if you control seven or more Plains, you may return target creature card from your graveyard to the battlefield.
{T}: Add {W}.
{W}
Ethereal Haze
Instant - Arcane
Prevent all damage that would be dealt by creatures this turn.
{2}{W}{W}
Field of Souls
Enchantment
Whenever a nontoken creature is put into your graveyard from the battlefield, create a 1/1 white Spirit creature token with flying.
{4}{W}
Gallows Warden
Creature - Spirit
Flying
Other Spirit creatures you control get +0/+1.
3 /
3
{3}
Heraldic Banner
Artifact
As Heraldic Banner enters the battlefield, choose a color.
Creatures you control of the chosen color get +1/+0.
{T}: Add one mana of the chosen color.
{1}{W}
Honor of the Pure
Enchantment
White creatures you control get +1/+1.
{W}
Hundred-Talon Strike
Instant - Arcane
Target creature gets +1/+0 and gains first strike until end of turn.
Splice onto Arcane--Tap an untapped white creature you control. (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.)
{1}{W}
Intangible Virtue
Enchantment
Creature tokens you control get +1/+1 and have vigilance.
{5}{W}{W}
Kami of the Honored Dead
Creature - Spirit
Flying
Whenever Kami of the Honored Dead is dealt damage, you gain that much life.
Soulshift 6 (When this creature dies, you may return target Spirit card with mana value 6 or less from your graveyard to your hand.)
3 /
5
{3}
Long-Forgotten Gohei
Artifact
Arcane spells you cast cost {1} less to cast.
Spirit creatures you control get +1/+1.
{2}
Marble Diamond
Artifact
Marble Diamond enters the battlefield tapped.
{T}: Add {W}.
{5}{W}{W}
Mass Calcify
Sorcery
Destroy all nonwhite creatures.
{5}
Mind's Eye
Artifact
Whenever an opponent draws a card, you may pay {1}. If you do, draw a card.
{1}{W}
Otherworldly Journey
Instant - Arcane
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.
{6}{W}
Oyobi, Who Split the Heavens
Legendary Creature - Spirit
Flying
Whenever you cast a Spirit or Arcane spell, create a 3/3 white Spirit creature token with flying.
Sacrifice Selfless Spirit: Creatures you control gain indestructible until end of turn.
2 /
1
{1}
Sol Ring
Artifact
{T}: Add {C}{C}.
{2/W}{2/W}{2/W}
Spectral Procession
Sorcery
Create three 1/1 white Spirit creature tokens with flying.
{4}{W}{W}
Spirit of the Hearth
Creature - Cat Spirit
Flying
You have hexproof. (You can't be the target of spells or abilities your opponents control.)
4 /
5
{W}
Spiritual Visit
Instant - Arcane
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.)
{2}{W}
Terashi's Grasp
Sorcery - Arcane
Destroy target artifact or enchantment. You gain life equal to its mana value.
{3}{W}{W}{W}
True Conviction
Enchantment
Creatures you control have double strike and lifelink.
{2}{W}
Twilight Drover
Creature - Spirit
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.
1 /
1
{3}{W}
Windborn Muse
Creature - Spirit
Flying
Creatures can't attack you unless their controller pays {2} for each creature they control that's attacking you.
2 /
3
{4}{W}{W}
Yosei, the Morning Star
Legendary Creature - Dragon Spirit
Flying
When Yosei, the Morning Star dies, target player skips their next untap step. Tap up to five target permanents that player controls.