Baleful Ammit

Lifelink
When this creature enters, put a -1/-1 counter on target creature you control.

Fallow Wurm

When this creature enters, sacrifice it unless you discard a land card.

Lava Hounds

Haste
When this creature enters, it deals 4 damage to you.

Hunted Dragon

Flying, haste
When this creature enters, target opponent creates three 2/2 white Knight creature tokens with first strike.

Sturdy Hatchling

This creature enters with four -1/-1 counters on it.
{G/U}: This creature gains shroud until end of turn. (It can't be the target of spells or abilities.)
Whenever you cast a green spell, remove a -1/-1 counter from this creature.
Whenever you cast a blue spell, remove a -1/-1 counter from this creature.

Eviscerator

Protection from white
When this creature enters, you lose 5 life.

Iwamori of the Open Fist

Trample
When Iwamori enters, each opponent may put a legendary creature card from their hand onto the battlefield.

Hunted Troll

When this creature enters, target opponent creates four 1/1 blue Faerie creature tokens with flying.
{G}: Regenerate this creature.

Indentured Djinn

Flying
When this creature enters, each other player may draw up to three cards.

Minotaur Explorer

When this creature enters, sacrifice it unless you discard a card at random.

Phyrexian Dreadnought

Trample
When this creature enters, sacrifice it unless you sacrifice any number of creatures with total power 12 or greater.

Tempting Wurm

When this creature enters, each opponent may put any number of artifact, creature, enchantment, and/or land cards from their hand onto the battlefield.

Argothian Wurm

Trample
When this creature enters, any player may sacrifice a land of their choice. If a player does, put this creature on top of its owner's library.

Noxious Hatchling

This creature enters with four -1/-1 counters on it.
Wither (This deals damage to creatures in the form of -1/-1 counters.)
Whenever you cast a black spell, remove a -1/-1 counter from this creature.
Whenever you cast a green spell, remove a -1/-1 counter from this creature.

Hunted Phantasm

This creature can't be blocked.
When this creature enters, target opponent creates five 1/1 red Goblin creature tokens.

Primeval Force

When this creature enters, sacrifice it unless you sacrifice three Forests.

Vampiric Spirit

Flying
When this creature enters, you lose 4 life.

Nulltread Gargantuan

When this creature enters, put a creature you control on top of its owner's library.

Shivan Wumpus

Scythe Tiger

Shroud (This creature can't be the target of spells or abilities.)
When this creature enters, sacrifice it unless you sacrifice a land.

Cursed Courtier

Lifelink
When this creature enters, create a Cursed Role token attached to it. (Enchanted creature is 1/1.)

Hunted Horror

Trample
When this creature enters, target opponent creates two 3/3 green Centaur creature tokens with protection from black.

Belligerent Hatchling

First strike
This creature enters with four -1/-1 counters on it.
Whenever you cast a red spell, remove a -1/-1 counter from this creature.
Whenever you cast a white spell, remove a -1/-1 counter from this creature.

Greenbelt Rampager

When this creature enters, pay {E}{E} (two energy counters). If you can't, return this creature to its owner's hand and you get {E}.

Vexing Devil

When this creature enters, any opponent may have it deal 4 damage to them. If a player does, sacrifice this creature.

Shrewd Hatchling

This creature enters with four -1/-1 counters on it.
{U/R}: Target creature can't block this creature this turn.
Whenever you cast a blue spell, remove a -1/-1 counter from this creature.
Whenever you cast a red spell, remove a -1/-1 counter from this creature.

Eon Frolicker

Flying
When this creature enters, if you cast it, target opponent takes an extra turn after this one. Until your next turn, you and planeswalkers you control gain protection from that player. (You and planeswalkers you control can't be targeted, dealt damage, or enchanted by anything controlled by that player.)

Rogue Elephant

When this creature enters, sacrifice it unless you sacrifice a Forest.

Hunted Wumpus

When this creature enters, each other player may put a creature card from their hand onto the battlefield.

Leveler

When this creature enters, exile all cards from your library.

Boldwyr Heavyweights

Trample
When this creature enters, each opponent may search their library for a creature card and put it onto the battlefield. Then each player who searched their library this way shuffles.

Denizen of the Deep

When this creature enters, return each other creature you control to its owner's hand.

Bull Elephant

When this creature enters, sacrifice it unless you return two Forests you control to their owner's hand.

Demonlord of Ashmouth

Flying
When this creature enters, exile it unless you sacrifice another creature.
Undying (When this creature dies, if it had no +1/+1 counters on it, return it to the battlefield under its owner's control with a +1/+1 counter on it.)

Hunted Lammasu

Flying
When this creature enters, target opponent creates a 4/4 black Horror creature token.

Eater of Days

Flying, trample
When this creature enters, you skip your next two turns.

Ovinomancer

When this creature enters, sacrifice it unless you return three basic lands you control to their owner's hand.
{T}, Return this creature to its owner's hand: Destroy target creature. It can't be regenerated. That creature's controller creates a 0/1 green Sheep creature token.

Lord of Tresserhorn

When Lord of Tresserhorn enters, you lose 2 life, you sacrifice two creatures, and target opponent draws two cards.
{B}: Regenerate Lord of Tresserhorn.

Balduvian Horde

Jokulmorder

Trample
This creature enters tapped.
When this creature enters, sacrifice it unless you sacrifice five lands.
This creature doesn't untap during your untap step.
Whenever you play an Island, you may untap this creature.

Thundering Wurm

Mercenary Knight

When this creature enters, sacrifice it unless you discard a creature card.

Dread Reaper

Flying
When this creature enters, you lose 5 life.

Prowling Pangolin

When this creature enters, any player may sacrifice two creatures of their choice. If a player does, sacrifice this creature.

Sea Drake

Flying
When this creature enters, return two target lands you control to their owner's hand.

Channeler Initiate

When this creature enters, put three -1/-1 counters on target creature you control.
{T}, Remove a -1/-1 counter from this creature: Add one mana of any color.

Ugin's Construct

When this creature enters, sacrifice a permanent that's one or more colors.

Old-Growth Dryads

When this creature enters, each opponent may search their library for a basic land card, put it onto the battlefield tapped, then shuffle.

Crocodile of the Crossing

Haste
When this creature enters, put a -1/-1 counter on target creature you control.

Sky Swallower

Flying
When this creature enters, target opponent gains control of all other permanents you control.

Glint Hawk

Flying
When this creature enters, sacrifice it unless you return an artifact you control to its owner's hand.

Enslaved Horror

When this creature enters, each other player may return a creature card from their graveyard to the battlefield.

Hidden Horror

Drekavac

When this creature enters, sacrifice it unless you discard a noncreature card.

Rathi Dragon

Flying (This creature can't be blocked except by creatures with flying or reach.)
When this creature enters, sacrifice it unless you sacrifice two Mountains.

Pillaging Horde

Bellowing Saddlebrute

Raid — When this creature enters, you lose 4 life unless you attacked this turn.

Kjeldoran Dead

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

Hired Giant

When this creature enters, each other player may search their library for a land card and put that card onto the battlefield. Then each player who searched their library this way shuffles.

Megatherium

Trample
When this creature enters, sacrifice it unless you pay {1} for each card in your hand.