Soul Warden

Whenever another creature enters, you gain 1 life.

Oblivion Ring

When Oblivion Ring enters, exile another target nonland permanent.
When Oblivion Ring leaves the battlefield, return the exiled card to the battlefield under its owner's control.

Arrest

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

Fiend Hunter

When Fiend Hunter enters, you may exile another target creature.
When Fiend Hunter leaves the battlefield, return the exiled card to the battlefield under its owner's control.

Riders of Gavony

Vigilance
As Riders of Gavony enters, choose a creature type.
Human creatures you control have protection from creatures of the chosen type.

Stonehorn Dignitary

When Stonehorn Dignitary enters, target opponent skips their next combat phase.

Doomed Traveler

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

Gather the Townsfolk

Create two 1/1 white Human creature tokens.
Fateful hour — If you have 5 or less life, create five of those tokens instead.

Emancipation Angel

Flying
When Emancipation Angel enters, return a permanent you control to its owner's hand.

Plains

Intangible Virtue

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

Soul's Attendant

Whenever another creature enters, you may gain 1 life.

Venerable Monk

When Venerable Monk enters, you gain 2 life.

Conjurer's Closet

At the beginning of your end step, you may exile target creature you control, then return that card to the battlefield under your control.

Journey to Nowhere

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

Solemn Offering

Destroy target artifact or enchantment. You gain 4 life.

Cloudchaser Eagle

Flying
When Cloudchaser Eagle enters, destroy target enchantment.

Defang

Enchant creature
Prevent all damage that would be dealt by enchanted creature.

Sudden Disappearance

Exile all nonland permanents target player controls. Return the exiled cards to the battlefield under their owner's control at the beginning of the next end step.

Pacifism

Enchant creature
Enchanted creature can't attack or block.

Erase

Banishing Stroke

Put target artifact, creature, or enchantment on the bottom of its owner's library.
Miracle {W} (You may cast this card for its miracle cost when you draw it if it's the first card you drew this turn.)

Stormfront Riders

Flying
When Stormfront Riders enters, return two creatures you control to their owner's hand.
Whenever Stormfront Riders or another creature is returned to your hand from the battlefield, create a 1/1 white Soldier creature token.

Suspension Field

When Suspension Field enters, you may exile target creature with toughness 3 or greater until Suspension Field leaves the battlefield. (That creature returns under its owner's control.)