Lithoform Engine

{2}, {T}: Copy target activated or triggered ability you control. You may choose new targets for the copy.
{3}, {T}: Copy target instant or sorcery spell you control. You may choose new targets for the copy.
{4}, {T}: Copy target permanent spell you control. (The copy becomes a token.)

Temple of Mystery

Temple of Mystery enters the battlefield tapped.
When Temple of Mystery enters the battlefield, scry 1.
{T}: Add {G} or {U}.

Breeding Pool

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

Shore Keeper

{7}{U}, {T}, Sacrifice Shore Keeper: Draw three cards.

Farseek

Search your library for a Plains, Island, Swamp, or Mountain card, put it onto the battlefield tapped, then shuffle.

Panharmonicon

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

Aurochs

Trample
Whenever Aurochs attacks, it gets +1/+0 until end of turn for each other attacking Aurochs.

Second Harvest

For each token you control, create a token that's a copy of that permanent.

Coati Scavenger

Descend 4 — When Coati Scavenger enters the battlefield, if there are four or more permanent cards in your graveyard, return target permanent card from your graveyard to your hand.

Labyrinth Minotaur

Whenever Labyrinth Minotaur blocks a creature, that creature doesn't untap during its controller's next untap step.

Fleeting Aven

Flying
Whenever a player cycles a card, return Fleeting Aven to its owner's hand.

Rock Lobster

Creatures named Scissors Lizard can't attack or block.

Vexing Beetle

This spell can't be countered.
Vexing Beetle gets +3/+3 as long as no opponent controls a creature.

Crashing Boars

Whenever Crashing Boars attacks, defending player chooses an untapped creature they control. That creature blocks Crashing Boars this turn if able.

Mossdog

Whenever Mossdog becomes the target of a spell or ability an opponent controls, put a +1/+1 counter on Mossdog.

Brushwagg

Whenever Brushwagg blocks or becomes blocked, it gets -2/+2 until end of turn.

Forest

Dreamroot Cascade

Dreamroot Cascade enters the battlefield tapped unless you control two or more other lands.
{T}: Add {G} or {U}.

Arcane Signet

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

Wild Mammoth

At the beginning of your upkeep, if a player controls more creatures than each other player, the player who controls the most creatures gains control of Wild Mammoth.

Giant Badger

Whenever Giant Badger blocks, it gets +2/+2 until end of turn.

Giant Crab

{U}: Giant Crab gains shroud until end of turn. (It can't be the target of spells or abilities.)

Simic Signet

Zodiac Rooster

Plainswalk (This creature can't be blocked as long as defending player controls a Plains.)

Bubbling Beebles

Bubbling Beebles can't be blocked as long as defending player controls an enchantment.

Evolving Wilds

{T}, Sacrifice Evolving Wilds: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

Growth Spiral

Draw a card. You may put a land card from your hand onto the battlefield.

Reliquary Tower

You have no maximum hand size.
{T}: Add {C}.

Cephalid Pathmage

Cephalid Pathmage can't be blocked.
{T}, Sacrifice Cephalid Pathmage: Target creature can't be blocked this turn.

Lhurgoyf

Lhurgoyf's power is equal to the number of creature cards in all graveyards and its toughness is equal to that number plus 1.

Gibbering Hyenas

Gibbering Hyenas can't block black creatures.

Glissa's Courier

Mountainwalk (This creature can't be blocked as long as defending player controls a Mountain.)

Hazy Homunculus

Hazy Homunculus can't be blocked as long as defending player controls an untapped land.

Foratog

{G}, Sacrifice a Forest: Foratog gets +2/+2 until end of turn.

Myr Prototype

At the beginning of your upkeep, put a +1/+1 counter on Myr Prototype.
Myr Prototype can't attack or block unless you pay {1} for each +1/+1 counter on it.

Lurking Green Dragon

Flying
Lurking Green Dragon can't attack unless defending player controls a creature with flying.

Wardscale Crocodile

Hexproof (This creature can't be the target of spells or abilities your opponents control.)

Emerald Oryx

Forestwalk (This creature can't be blocked as long as defending player controls a Forest.)

Fungusaur

Whenever Fungusaur is dealt damage, put a +1/+1 counter on it.

Island

Croaking Counterpart

Create a token that's a copy of target non-Frog creature, except it's a 1/1 green Frog.
Flashback {3}{G}{U} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Sulam Djinn

Trample
Sulam Djinn gets -2/-2 as long as green is the most common color among all permanents or is tied for most common.

Hinterland Harbor

Hinterland Harbor enters the battlefield tapped unless you control a Forest or an Island.
{T}: Add {G} or {U}.

Exotic Orchard

{T}: Add one mana of any color that a land an opponent controls could produce.

Gorilla Pack

Gorilla Pack can't attack unless defending player controls a Forest.
When you control no Forests, sacrifice Gorilla Pack.

Spellkeeper Weird

{2}, {T}, Sacrifice Spellkeeper Weird: Return target instant or sorcery card from your graveyard to your hand.

Pangosaur

Whenever a player plays a land, return Pangosaur to its owner's hand.

Uktabi Wildcats

Uktabi Wildcats's power and toughness are each equal to the number of Forests you control.
{G}, Sacrifice a Forest: Regenerate Uktabi Wildcats.

Wiitigo

Wiitigo enters the battlefield with six +1/+1 counters on it.
At the beginning of your upkeep, put a +1/+1 counter on Wiitigo if it has blocked or been blocked since your last upkeep. Otherwise, remove a +1/+1 counter from it.

Crash of Rhinos

Shamanic Revelation

Draw a card for each creature you control.
Ferocious — You gain 4 life for each creature you control with power 4 or greater.

Golden Ratio

Draw a card for each different power among creatures you control.

Bellowing Elk

As long as you had another creature enter the battlefield under your control this turn, Bellowing Elk has trample and indestructible.

Spitting Slug

Whenever Spitting Slug blocks or becomes blocked, you may pay {1}{G}. If you do, Spitting Slug gains first strike until end of turn. Otherwise, each creature blocking or blocked by Spitting Slug gains first strike until end of turn.

Rogue's Passage

{T}: Add {C}.
{4}, {T}: Target creature can't be blocked this turn.

Commander's Sphere

{T}: Add one mana of any color in your commander's color identity.
Sacrifice Commander's Sphere: Draw a card.

Imperiosaur

Spend only mana produced by basic lands to cast this spell.

Simic Charm

Choose one —
• Target creature gets +3/+3 until end of turn.
• Permanents you control gain hexproof until end of turn.
• Return target creature to its owner's hand.

Command Tower

Balduvian Bears

Rejuvenating Springs

Rejuvenating Springs enters the battlefield tapped unless you have two or more opponents.
{T}: Add {G} or {U}.

Omnibian

{T}: Target creature becomes a Frog with base power and toughness 3/3 until end of turn.

Terramorphic Expanse

{T}, Sacrifice Terramorphic Expanse: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

Garruk's Uprising

When Garruk's Uprising enters the battlefield, if you control a creature with power 4 or greater, draw a card.
Creatures you control have trample. (They can deal excess combat damage to the player or planeswalker they're attacking.)
Whenever a creature with power 4 or greater enters the battlefield under your control, draw a card.

Spellbane Centaur

Creatures you control can't be the targets of blue spells or abilities from blue sources.

Mtenda Lion

Whenever Mtenda Lion attacks, defending player may pay {U}. If that player does, prevent all combat damage that would be dealt by Mtenda Lion this turn.

Timber Wolves

Banding (Any creatures with banding, and up to one without, can attack in a band. Bands are blocked as a group. If any creatures with banding you control are blocking or being blocked by a creature, you divide that creature's combat damage, not its controller, among any of the creatures it's being blocked by or is blocking.)

Strionic Resonator

{2}, {T}: Copy target triggered ability you control. You may choose new targets for the copy. (A triggered ability uses the words "when," "whenever," or "at.")

Pompous Gadabout

Pompous Gadabout has hexproof as long as it's your turn.
Pompous Gadabout can't be blocked by creatures that don't have a name.

Sol Ring

Simic Ragworm

Ancient Ooze

Ancient Ooze's power and toughness are each equal to the total mana value of other creatures you control.

Joven's Ferrets

Whenever Joven's Ferrets attacks, it gets +0/+2 until end of turn.
At end of combat, tap all creatures that blocked Joven's Ferrets this turn. They don't untap during their controller's next untap step.

Volo, Guide to Monsters

Whenever you cast a creature spell that doesn't share a creature type with a creature you control or a creature card in your graveyard, copy that spell. (A copy of a creature spell becomes a token.)

Mnemonic Sliver

All Slivers have "{2}, Sacrifice this permanent: Draw a card."

Kodama's Reach

Search your library for up to two basic land cards, reveal those cards, put one onto the battlefield tapped and the other into your hand, then shuffle.

Life Finds a Way

Whenever a nontoken creature with power 4 or greater enters the battlefield under your control, populate. (Create a token that's a copy of a creature token you control.)

Frostpeak Yeti

{1}{S}: Frostpeak Yeti can't be blocked this turn. ({S} can be paid with one mana from a snow source.)