Slimy Kavu

{T}: Target land becomes a Swamp until end of turn.

Clockwork Avian

Flying
Clockwork Avian enters with four +1/+0 counters on it.
At end of combat, if Clockwork Avian attacked or blocked this combat, remove a +1/+0 counter from it.
{X}, {T}: Put up to X +1/+0 counters on Clockwork Avian. This ability can't cause the total number of +1/+0 counters on Clockwork Avian to be greater than four. Activate only during your upkeep.

Retromancer

Whenever Retromancer becomes the target of a spell or ability, Retromancer deals 3 damage to that spell or ability's controller.

Sporesower Thallid

At the beginning of your upkeep, put a spore counter on each Fungus you control.
Remove three spore counters from Sporesower Thallid: Create a 1/1 green Saproling creature token.

Ivy Elemental

Ivy Elemental enters with X +1/+1 counters on it.

Kobold Taskmaster

Other Kobold creatures you control get +1/+0.

Shivan Oasis

Shivan Oasis enters tapped.
{T}: Add {R} or {G}.

Viashino Warrior

Broken Bond

Destroy target artifact or enchantment. You may put a land card from your hand onto the battlefield.

Greenseeker

{G}, {T}, Discard a card: Search your library for a basic land card, reveal it, put it into your hand, then shuffle.

Yavimaya Dryad

Forestwalk (This creature can't be blocked as long as defending player controls a Forest.)
When Yavimaya Dryad enters, you may search your library for a Forest card, put it onto the battlefield tapped under target player's control, then shuffle.

Inferno

Inferno deals 6 damage to each creature and each player.

Acridian

Echo {1}{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.)

Overgrowth

Enchant land
Whenever enchanted land is tapped for mana, its controller adds an additional {G}{G}.

Thick-Skinned Goblin

You may pay {0} rather than pay the echo cost for permanents you control.
{R}: Thick-Skinned Goblin gains protection from red until end of turn.

Grow from the Ashes

Kicker {2} (You may pay an additional {2} as you cast this spell.)
Search your library for a basic land card, put it onto the battlefield, then shuffle. If this spell was kicked, instead search your library for two basic land cards, put them onto the battlefield, then shuffle.

Firebolt

Firebolt deals 2 damage to any target.
Flashback {4}{R} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Gaea's Blessing

Target player shuffles up to three target cards from their graveyard into their library.
Draw a card.
When Gaea's Blessing is put into your graveyard from your library, shuffle your graveyard into your library.

Ekundu Cyclops

If a creature you control attacks, Ekundu Cyclops also attacks if able.

Harrow

As an additional cost to cast this spell, sacrifice a land.
Search your library for up to two basic land cards, put them onto the battlefield, then shuffle.

Quicksand

{T}: Add {C}.
{T}, Sacrifice Quicksand: Target attacking creature without flying gets -1/-2 until end of turn.

Plated Spider

Reach (This creature can block creatures with flying.)

Divergent Growth

Until end of turn, lands you control gain "{T}: Add one mana of any color."

Anurid Barkripper

Threshold — Anurid Barkripper gets +2/+2 as long as seven or more cards are in your graveyard.

Gaea's Might

Domain — Target creature gets +1/+1 until end of turn for each basic land type among lands you control.

Krosan Archer

Reach (This creature can block creatures with flying.)
{G}, Discard a card: Krosan Archer gets +0/+2 until end of turn.

Goblin Shrine

Enchant land
As long as enchanted land is a basic Mountain, Goblin creatures get +1/+0.
When Goblin Shrine leaves the battlefield, it deals 1 damage to each Goblin creature.

Goblin Elite Infantry

Whenever Goblin Elite Infantry blocks or becomes blocked, it gets -1/-1 until end of turn.

Venomous Vines

Memorial to War

Memorial to War enters tapped.
{T}: Add {R}.
{4}{R}, {T}, Sacrifice Memorial to War: Destroy target land.

Forest

Brassclaw Orcs

Brassclaw Orcs can't block creatures with power 2 or greater.

Taunting Elf

All creatures able to block Taunting Elf do so.

Mad Dog

At the beginning of your end step, if Mad Dog didn't attack or come under your control this turn, sacrifice it.

Mountain

Silk Net

Target creature gets +1/+1 and gains reach until end of turn. (It can block creatures with flying.)

Simoon

Simoon deals 1 damage to each creature target opponent controls.

Commando Raid

Until end of turn, target creature you control gains "When this creature deals combat damage to a player, you may have it deal damage equal to its power to target creature that player controls."

Mishra's Groundbreaker

{T}, Sacrifice Mishra's Groundbreaker: Target land becomes a 3/3 artifact creature that's still a land. (This effect lasts indefinitely.)

Aesthir Glider

Crosswinds

Mwonvuli Acid-Moss

Destroy target land. Search your library for a Forest card, put that card onto the battlefield tapped, then shuffle.

Meteor Shower

Meteor Shower deals X plus 1 damage divided as you choose among any number of targets.

Wildfire Emissary

Protection from white
{1}{R}: Wildfire Emissary gets +1/+0 until end of turn.

Flame Burst

Flame Burst deals X damage to any target, where X is 2 plus the number of cards named Flame Burst in all graveyards.

Elvish Fury

Buyback {4} (You may pay an additional {4} as you cast this spell. If you do, put this card into your hand as it resolves.)
Target creature gets +2/+2 until end of turn.

Ana Sanctuary

At the beginning of your upkeep, if you control a blue or black permanent, target creature gets +1/+1 until end of turn. If you control a blue permanent and a black permanent, that creature gets +5/+5 until end of turn instead.

Feral Thallid

At the beginning of your upkeep, put a spore counter on Feral Thallid.
Remove three spore counters from Feral Thallid: Regenerate Feral Thallid.

Cone of Flame

Cone of Flame deals 1 damage to any target, 2 damage to another target, and 3 damage to a third target.

Argothian Swine

Gaea's Balance

As an additional cost to cast this spell, sacrifice five lands.
Search your library for a land card of each basic land type, put those cards onto the battlefield, then shuffle.

Stampeding Wildebeests

Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.)
At the beginning of your upkeep, return a green creature you control to its owner's hand.

Lava Blister

Destroy target nonbasic land unless its controller has Lava Blister deal 6 damage to them.

Goblin Dynamo

{T}: Goblin Dynamo deals 1 damage to any target.
{X}{R}, {T}, Sacrifice Goblin Dynamo: It deals X damage to any target.

Marker Beetles

When Marker Beetles dies, target creature gets +1/+1 until end of turn.
{2}, Sacrifice Marker Beetles: Draw a card.

Detonate

Destroy target artifact with mana value X. It can't be regenerated. Detonate deals X damage to that artifact's controller.

Essence Filter

Destroy all enchantments or all nonwhite enchantments.

Frenetic Ogre

{R}, Discard a card at random: Frenetic Ogre gets +3/+0 until end of turn.

Llanowar Sentinel

When Llanowar Sentinel enters, you may pay {1}{G}. If you do, search your library for a card named Llanowar Sentinel, put that card onto the battlefield, then shuffle.

Zuran Orb

Scryb Ranger

Flash
Flying, protection from blue
Return a Forest you control to its owner's hand: Untap target creature. Activate only once each turn.

Glass Asp

Whenever Glass Asp deals combat damage to a player, that player loses 2 life at the beginning of their next draw step unless they pay {2} before that step.

Kavu Climber

Strength in Numbers

Until end of turn, target creature gains trample and gets +X/+X, where X is the number of attacking creatures.

Tropical Storm

Tropical Storm deals X damage to each creature with flying and 1 additional damage to each blue creature.

Search for Tomorrow

Search your library for a basic land card, put it onto the battlefield, then shuffle.
Suspend 2—{G} (Rather than cast this card from your hand, you may pay {G} and exile it with two time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, you may cast it without paying its mana cost.)

Surging Flame

Ripple 4 (When you cast this spell, you may reveal the top four cards of your library. You may cast spells with the same name as this spell from among those cards without paying their mana costs. Put the rest on the bottom of your library.)
Surging Flame deals 2 damage to any target.

Nature's Lore

Search your library for a Forest card, put that card onto the battlefield, then shuffle.

Su-Chi

Into the North

Search your library for a snow land card, put it onto the battlefield tapped, then shuffle.

Ersatz Gnomes

{T}: Target spell becomes colorless.
{T}: Target permanent becomes colorless until end of turn.

Rift Elemental

{1}{R}, Remove a time counter from a permanent you control or suspended card you own: Rift Elemental gets +2/+0 until end of turn.

Bloodline Shaman

{T}: Choose a creature type. Reveal the top card of your library. If that card is a creature card of the chosen type, put it into your hand. Otherwise, put it into your graveyard.

Harmonize

Spider Climb

You may cast Spider Climb as though it had flash. If you cast it any time a sorcery couldn't have been cast, the controller of the permanent it becomes sacrifices it at the beginning of the next cleanup step.
Enchant creature
Enchanted creature gets +0/+3 and has reach. (It can block creatures with flying.)

Dwarven Soldier

Whenever Dwarven Soldier blocks or becomes blocked by one or more Orcs, Dwarven Soldier gets +0/+2 until end of turn.

Bloodfire Dwarf

{R}, Sacrifice Bloodfire Dwarf: It deals 1 damage to each creature without flying.

Venomspout Brackus

{1}{G}, {T}: Venomspout Brackus deals 5 damage to target attacking or blocking creature with flying.
Morph {3}{G}{G} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)

Barbarian Lunatic

{2}{R}, Sacrifice Barbarian Lunatic: It deals 2 damage to target creature.

Livonya Silone

First strike; legendary landwalk (This creature can't be blocked as long as defending player controls a legendary land.)

Norwood Ranger

Quirion Explorer

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

Lesser Gargadon

Whenever Lesser Gargadon attacks or blocks, sacrifice a land.

Elvish Lyrist

{G}, {T}, Sacrifice Elvish Lyrist: Destroy target enchantment.

Hush

Destroy all enchantments.
Cycling {2} ({2}, Discard this card: Draw a card.)

Thran Golem

As long as Thran Golem is enchanted, it gets +2/+2 and has flying, first strike, and trample.

Giant Mantis

Guerrilla Tactics

Guerrilla Tactics deals 2 damage to any target.
When a spell or ability an opponent controls causes you to discard Guerrilla Tactics, Guerrilla Tactics deals 4 damage to any target.