Boreal Druid

Fblthp, the Lost

When Fblthp enters, draw a card. If it entered from your library or was cast from your library, draw two cards instead.
When Fblthp becomes the target of a spell, shuffle Fblthp into its owner's library.

Soul of the Harvest

Trample
Whenever another nontoken creature you control enters, you may draw a card.

Shriekmaw

Fear (This creature can't be blocked except by artifact creatures and/or black creatures.)
When this creature enters, destroy target nonartifact, nonblack creature.
Evoke {1}{B} (You may cast this spell for its evoke cost. If you do, it's sacrificed when it enters.)

Cadaverous Bloom

Exile a card from your hand: Add {B}{B} or {G}{G}.

Wirewood Lodge

{T}: Add {C}.
{G}, {T}: Untap target Elf.

Opulent Palace

This land enters tapped.
{T}: Add {B}, {G}, or {U}.

Acidic Slime

Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)
When this creature enters, destroy target artifact, enchantment, or land.

Beastcaller Savant

Haste
{T}: Add one mana of any color. Spend this mana only to cast a creature spell.

Fyndhorn Elves

Aluren

Any player may cast creature spells with mana value 3 or less without paying their mana costs and as though they had flash.

Cadaver Imp

Flying
When this creature enters, you may return target creature card from your graveyard to your hand.

Wall of Blossoms

Defender
When this creature enters, draw a card.

Intruder Alarm

Creatures don't untap during their controllers' untap steps.
Whenever a creature enters, untap all creatures.

Ravenous Chupacabra

When this creature enters, destroy target creature an opponent controls.

Elvish Mystic

Wistful Selkie

Elves of Deep Shadow

{T}: Add {B}. This creature deals 1 damage to you.

Beast Whisperer

Whenever you cast a creature spell, draw a card.

Temple of Mystery

This land enters tapped.
When this land enters, scry 1. (Look at the top card of your library. You may put that card on the bottom.)
{T}: Add {G} or {U}.

Urborg Elf

Baleful Strix

Flying, deathtouch
When this creature enters, draw a card.

Snow-Covered Island

Merchant of Secrets

Rogue Refiner

When this creature enters, draw a card and you get {E}{E} (two energy counters).

Ice-Fang Coatl

Flash
Flying
When this creature enters, draw a card.
This creature has deathtouch as long as you control at least three other snow permanents.

Alchemist's Refuge

{T}: Add {C}.
{G}{U}, {T}: You may cast spells this turn as though they had flash.

Breeding Pool

({T}: Add {G} or {U}.)
As this land enters, you may pay 2 life. If you don't, it enters tapped.

Priest of Titania

{T}: Add {G} for each Elf on the battlefield.

Dusk Legion Zealot

When this creature enters, you draw a card and you lose 1 life.

Paradise Druid

This creature has hexproof as long as it's untapped. (It can't be the target of spells or abilities your opponents control.)
{T}: Add one mana of any color.

Eternal Witness

When this creature enters, you may return target card from your graveyard to your hand.

Snow-Covered Swamp

Meteor Golem

When this creature enters, destroy target nonland permanent an opponent controls.

Leyline of Anticipation

If this card is in your opening hand, you may begin the game with it on the battlefield.
You may cast spells as though they had flash.

Phyrexian Rager

Drowned Catacomb

This land enters tapped unless you control an Island or a Swamp.
{T}: Add {U} or {B}.

Hinterland Harbor

This land enters tapped unless you control a Forest or an Island.
{T}: Add {G} or {U}.

Darkwater Catacombs

Panharmonicon

If an artifact or creature entering causes a triggered ability of a permanent you control to trigger, that ability triggers an additional time.

Dream Halls

Rather than pay the mana cost for a spell, its controller may discard a card that shares a color with that spell.

Carnival of Souls

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

Massacre Girl

Menace
When Massacre Girl enters, each other creature gets -1/-1 until end of turn. Whenever a creature dies this turn, each creature other than Massacre Girl gets -1/-1 until end of turn.

Big Game Hunter

When this creature enters, destroy target creature with power 4 or greater. It can't be regenerated.
Madness {B} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

Coiling Oracle

When this creature enters, reveal the top card of your library. If it's a land card, put it onto the battlefield. Otherwise, put that card into your hand.

Ezuri, Renegade Leader

{G}: Regenerate another target Elf.
{2}{G}{G}{G}: Elf creatures you control get +3/+3 and gain trample until end of turn.

Wellwisher

{T}: You gain 1 life for each Elf on the battlefield.

Magus of the Future

Play with the top card of your library revealed.
You may play lands and cast spells from the top of your library.

Guardian Project

Whenever a nontoken creature you control enters, if it doesn't have the same name as another creature you control or a creature card in your graveyard, draw a card.

Oppression

Whenever a player casts a spell, that player discards a card.

Tangleroot

Whenever a player casts a creature spell, that player adds {G}.

Elvish Visionary

Mystic Snake

Flash
When this creature enters, counter target spell.

Generous Stray

Woodland Cemetery

This land enters tapped unless you control a Swamp or a Forest.
{T}: Add {B} or {G}.

Emergence Zone

{T}: Add {C}.
{1}, {T}, Sacrifice this land: You may cast spells this turn as though they had flash.

Skyscanner

Flying
When this creature enters, draw a card.

Future Sight

Cloudkin Seer

Frilled Mystic

Flash
When this creature enters, you may counter target spell.

Food Chain

Exile a creature you control: Add X mana of any one color, where X is 1 plus the exiled creature's mana value. Spend this mana only to cast creature spells.

Command Tower

{T}: Add one mana of any color in your commander's color identity.

Death Match

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

Reclamation Sage

When this creature enters, you may destroy target artifact or enchantment.

Aetherflux Reservoir

Whenever you cast a spell, you gain 1 life for each spell you've cast this turn.
Pay 50 life: This artifact deals 50 damage to any target.

Null Profusion

Skip your draw step.
Whenever you play a card, draw a card.
Your maximum hand size is two.

Words of Waste

{1}: The next time you would draw a card this turn, each opponent discards a card instead.

Snow-Covered Forest

Sea Gate Oracle

When this creature enters, look at the top two cards of your library. Put one of them into your hand and the other on the bottom of your library.

Essence Warden

Whenever another creature enters, you gain 1 life.

Llanowar Elves

Watery Grave

({T}: Add {U} or {B}.)
As this land enters, you may pay 2 life. If you don't, it enters tapped.

Sunken Hollow

({T}: Add {U} or {B}.)
This land enters tapped unless you control two or more basic lands.

Choked Estuary

As this land enters, you may reveal an Island or Swamp card from your hand. If you don't, this land enters tapped.
{T}: Add {U} or {B}.

Bolas's Citadel

You may look at the top card of your library any time.
You may play lands and cast spells from the top of your library. If you cast a spell this way, pay life equal to its mana value rather than pay its mana cost.
{T}, Sacrifice ten nonland permanents: Each opponent loses 10 life.

Tendrils of Agony

Target player loses 2 life and you gain 2 life.
Storm (When you cast this spell, copy it for each spell cast before it this turn. You may choose new targets for the copies.)

Yarok, the Desecrated

Deathtouch, lifelink
If a permanent entering causes a triggered ability of a permanent you control to trigger, that ability triggers an additional time.

Horizon Chimera

Flash
Flying, trample
Whenever you draw a card, you gain 1 life.

Quirion Elves

As this creature enters, choose a color.
{T}: Add {G}.
{T}: Add one mana of the chosen color.

Recycle

Overgrown Tomb

({T}: Add {B} or {G}.)
As this land enters, you may pay 2 life. If you don't, it enters tapped.

Multani's Acolyte

Echo {G}{G} (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 this creature enters, draw a card.