Serra Disciple

Flying, first strike
Whenever you cast a historic spell, Serra Disciple gets +1/+1 until end of turn. (Artifacts, legendaries, and Sagas are historic.)

Dispeller's Capsule

{2}{W}, {T}, Sacrifice Dispeller's Capsule: Destroy target artifact or enchantment.

Feat of Resistance

Put a +1/+1 counter on target creature you control. It gains protection from the color of your choice until end of turn. (It can't be blocked, targeted, dealt damage, enchanted, or equipped by anything of that color.)

Indomitable Will

Flash (You may cast this spell any time you could cast an instant.)
Enchant creature
Enchanted creature gets +1/+2.

Vessel of Ephemera

{2}{W}, Sacrifice Vessel of Ephemera: Create two 1/1 white Spirit creature tokens with flying.

Seal of Cleansing

Sacrifice Seal of Cleansing: Destroy target artifact or enchantment.

Intangible Virtue

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

Pacifism

Enchant creature
Enchanted creature can't attack or block.

Silver Knight

Will of the All-Hunter

Target creature gets +2/+2 until end of turn. If it's blocking, instead put two +1/+1 counters on it.
Cycling {2} ({2}, Discard this card: Draw a card.)

Court Street Denizen

Whenever another white creature you control enters, tap target creature an opponent controls.

Dreadful Apathy

Enchant creature
Enchanted creature can't attack or block.
{2}{W}: Exile enchanted creature.

Adamant Will

Target creature gets +2/+2 and gains indestructible until end of turn. (Damage and effects that say "destroy" don't destroy it.)

Ossification

Enchant basic land you control
When Ossification enters, exile target creature or planeswalker an opponent controls until Ossification leaves the battlefield.

Divine Arrow

Divine Arrow deals 4 damage to target attacking or blocking creature.

Silverbeak Griffin

Flying (This creature can't be blocked except by creatures with flying or reach.)

Not Forgotten

Put target card from a graveyard on your choice of the top or bottom of its owner's library. Create a 1/1 white Spirit creature token with flying.

Gideon's Reproach

Gideon's Reproach deals 4 damage to target attacking or blocking creature.

Daxos, Blessed by the Sun

Daxos's toughness is equal to your devotion to white. (Each {W} in the mana costs of permanents you control counts toward your devotion to white.)
Whenever another creature you control enters or dies, you gain 1 life.

Planar Disruption

Enchant artifact, creature, or planeswalker
Enchanted permanent can't attack or block, and its activated abilities can't be activated.

Checkpoint Officer

Transcendent Envoy

Flying
Aura spells you cast cost {1} less to cast.

Revitalize

Glare of Heresy

Rustwing Falcon

Sephara, Sky's Blade

You may pay {W} and tap four untapped creatures you control with flying rather than pay this spell's mana cost.
Flying, lifelink
Other creatures you control with flying have indestructible. (Damage and effects that say "destroy" don't destroy them.)

Condemn

Put target attacking creature on the bottom of its owner's library. Its controller gains life equal to its toughness.

Righteous Blow

Righteous Blow deals 2 damage to target attacking or blocking creature.

Erase

Incisor Glider

Flying
Corrupted — Whenever Incisor Glider attacks, if an opponent has three or more poison counters, creatures you control get +1/+1 until end of turn.

Revoke Existence

Flensing Raptor

Flying
Toxic 1 (Players dealt combat damage by this creature also get a poison counter.)
When Flensing Raptor enters, another target creature you control with toxic gets +1/+1 and gains flying until end of turn.

Demystify

Swooping Lookout

Celestial Purge

Flicker of Fate

Exile target creature or enchantment, then return it to the battlefield under its owner's control.

Enchant creature
Enchanted creature gets +2/+2, has first strike, and is a Knight in addition to its other types. (It deals combat damage before creatures without first strike.)

Knight's Pledge

Enchant creature
Enchanted creature gets +2/+2.

Cage of Hands

Enchant creature
Enchanted creature can't attack or block.
{1}{W}: Return Cage of Hands to its owner's hand.