Llawan, Cephalid Empress

When Llawan, Cephalid Empress enters, return all blue creatures your opponents control to their owners' hands.
Your opponents can't cast blue creature spells.

Iname as One

When Iname as One enters, if you cast it from your hand, you may search your library for a Spirit permanent card, put it onto the battlefield, then shuffle.
When Iname as One dies, you may exile it. If you do, return target Spirit permanent card from your graveyard to the battlefield.

Shrieking Drake

Flying
When Shrieking Drake enters, return a creature you control to its owner's hand.

Telepathic Spies

When Telepathic Spies enters, look at target opponent's hand.

Abyssal Horror

Flying
When Abyssal Horror enters, target player discards two cards.

Spire Owl

Flying
When Spire Owl enters, look at the top four cards of your library, then put them back in any order.

Carnival of Souls

Whenever a creature enters, you lose 1 life and add {B}.

Maga, Traitor to Mortals

Maga, Traitor to Mortals enters with X +1/+1 counters on it.
When Maga enters, target player loses life equal to the number of +1/+1 counters on it.

Dakmor Ghoul

When Dakmor Ghoul enters, target opponent loses 2 life and you gain 2 life.

Serpent Warrior

When Serpent Warrior enters, you lose 3 life.

Spined Fluke

When Spined Fluke enters, sacrifice a creature.
{B}: Regenerate Spined Fluke.

Seed the Land

Whenever a land enters, its controller creates a 1/1 green Snake creature token.

Teroh's Faithful

When Teroh's Faithful enters, you gain 4 life.

Radiant's Dragoons

Echo {3}{W} (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)
When Radiant's Dragoons enters, you gain 5 life.

Totem Speaker

Whenever a Beast enters, you may gain 3 life.

Sosuke's Summons

Create two 1/1 green Snake creature tokens.
Whenever a nontoken Snake you control enters, you may return Sosuke's Summons from your graveyard to your hand.

Vampirism

Enchant creature
When Vampirism enters, draw a card at the beginning of the next turn's upkeep.
Enchanted creature gets +1/+1 for each other creature you control.
Other creatures you control get -1/-1.

Goretusk Firebeast

When Goretusk Firebeast enters, it deals 4 damage to target player or planeswalker.

Talas Explorer

Flying
When Talas Explorer enters, look at target opponent's hand.

Leonin Elder

Whenever an artifact enters, you may gain 1 life.

Akki Rockspeaker

Anarchist

When Anarchist enters, you may return target sorcery card from your graveyard to your hand.

Scrivener

When Scrivener enters, you may return target instant card from your graveyard to your hand.

Dracoplasm

Flying
As Dracoplasm enters, sacrifice any number of creatures. Dracoplasm's power becomes the total power of those creatures and its toughness becomes their total toughness.
{R}: Dracoplasm gets +1/+0 until end of turn.

Shu Grain Caravan

When Shu Grain Caravan enters, you gain 2 life.

In the Web of War

Whenever a creature you control enters, it gets +2/+0 and gains haste until end of turn.

Wu Scout

Horsemanship (This creature can't be blocked except by creatures with horsemanship.)
When Wu Scout enters, look at target opponent's hand.

Predatory Nightstalker

When Predatory Nightstalker enters, you may have target opponent sacrifice a creature of their choice.

Iname, Death Aspect

When Iname, Death Aspect enters, you may search your library for any number of Spirit cards, put them into your graveyard, then shuffle.

Equilibrium

Whenever you cast a creature spell, you may pay {1}. If you do, return target creature to its owner's hand.

Screeching Drake

Flying
When Screeching Drake enters, draw a card, then discard a card.

Cavern Harpy

Flying
When Cavern Harpy enters, return a blue or black creature you control to its owner's hand.
Pay 1 life: Return Cavern Harpy to its owner's hand.

Death Match

Whenever a creature enters, that creature's controller may have target creature of their choice get -3/-3 until end of turn.

Minion of the Wastes

Trample
As Minion of the Wastes enters, pay any amount of life.
Minion of the Wastes's power and toughness are each equal to the life paid as it entered.

Owl Familiar

Flying
When Owl Familiar enters, draw a card, then discard a card.

Nantuko Tracer

When Nantuko Tracer enters, you may put target card from a graveyard on the bottom of its owner's library.

Lifegift

Whenever a land enters, you may gain 1 life.

Frog Tongue

Enchant creature
When Frog Tongue enters, draw a card.
Enchanted creature has reach. (It can block creatures with flying.)

Keldon Vandals

Echo {2}{R} (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)
When Keldon Vandals enters, destroy target artifact.

Shu Soldier-Farmers

When Shu Soldier-Farmers enters, you gain 4 life.

Ashes of the Fallen

As Ashes of the Fallen enters, choose a creature type.
Each creature card in your graveyard has the chosen creature type in addition to its other types.

Striped Bears

Fire Imp

When Fire Imp enters, it deals 2 damage to target creature.

Wirewood Hivemaster

Whenever another nontoken Elf enters, you may create a 1/1 green Insect creature token.

Uktabi Orangutan

When Uktabi Orangutan enters, destroy target artifact.

Nikko-Onna

When Nikko-Onna enters, destroy target enchantment.
Whenever you cast a Spirit or Arcane spell, you may return Nikko-Onna to its owner's hand.

Sage Aven

Flying (This creature can't be blocked except by creatures with flying or reach.)
When Sage Aven enters, look at the top four cards of your library, then put them back in any order.

Aether Charge

Whenever a Beast you control enters, you may have it deal 4 damage to target opponent or planeswalker.

Spiritual Guardian

When Spiritual Guardian enters, you gain 4 life.

Wei Assassins

When Wei Assassins enters, target opponent chooses a creature they control. Destroy that creature.

Sarcomancy

When Sarcomancy enters, create a 2/2 black Zombie creature token.
At the beginning of your upkeep, if there are no Zombies on the battlefield, Sarcomancy deals 1 damage to you.

Council of Advisors

When Council of Advisors enters, draw a card.

Soulgorger Orgg

Trample
When Soulgorger Orgg enters, you lose all but 1 life.
When Soulgorger Orgg leaves the battlefield, you gain life equal to the life you lost when it entered.