Stampede

Attacking creatures get +1/+0 and gain trample until end of turn.

Kormus Bell

All Swamps are 1/1 black creatures that are still lands.

Smoke

Players can't untap more than one creature during their untap steps.

Boiling Seas

Waiting in the Weeds

Each player creates a 1/1 green Cat creature token for each untapped Forest they control.

Dirtcowl Wurm

Whenever an opponent plays a land, put a +1/+1 counter on Dirtcowl Wurm.

Giant Growth

Target creature gets +3/+3 until end of turn.

Flashfires

Serpent Generator

{4}, {T}: Create a 1/1 colorless Snake artifact creature token. It has "Whenever this creature deals damage to a player, that player gets a poison counter." (A player with ten or more poison counters loses the game.)

Mishra's Factory

{T}: Add {C}.
{1}: Mishra's Factory becomes a 2/2 Assembly-Worker artifact creature until end of turn. It's still a land.
{T}: Target Assembly-Worker creature gets +1/+1 until end of turn.

Mana Vault

Mana Vault doesn't untap during your untap step.
At the beginning of your upkeep, you may pay {4}. If you do, untap Mana Vault.
At the beginning of your draw step, if Mana Vault is tapped, it deals 1 damage to you.
{T}: Add {C}{C}{C}.

Hurricane

Hurricane deals X damage to each creature with flying and each player.

Karplusan Forest

{T}: Add {C}.
{T}: Add {R} or {G}. Karplusan Forest deals 1 damage to you.

Might of Oaks

Target creature gets +7/+7 until end of turn.

Vernal Bloom

Whenever a Forest is tapped for mana, its controller adds an additional {G}.

Stangg

When Stangg enters, create Stangg Twin, a legendary 3/4 red and green Human Warrior creature token. Exile that token when Stangg leaves the battlefield. Sacrifice Stangg when that token leaves the battlefield.

Slippery Karst

Slippery Karst enters tapped.
{T}: Add {G}.
Cycling {2} ({2}, Discard this card: Draw a card.)

Earthquake

Earthquake deals X damage to each creature without flying and each player.

Jayemdae Tome

Firebreathing

Enchant creature
{R}: Enchanted creature gets +1/+0 until end of turn.

Blaze

Segmented Wurm

Whenever Segmented Wurm becomes the target of a spell or ability, put a -1/-1 counter on it.

Elvish Archers

Sol Ring

Mirri, Cat Warrior

First strike, forestwalk, vigilance (This creature deals combat damage before creatures without first strike, it can't be blocked as long as defending player controls a Forest, and attacking doesn't cause this creature to tap.)

Thran Golem

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

Overrun

Creatures you control get +3/+3 and gain trample until end of turn.

Urza's Mine

{T}: Add {C}. If you control an Urza's Power-Plant and an Urza's Tower, add {C}{C} instead.

Ankh of Mishra

Whenever a land enters, Ankh of Mishra deals 2 damage to that land's controller.

Fire Diamond

Fire Diamond enters tapped.
{T}: Add {R}.

Renewing Touch

Shuffle any number of target creature cards from your graveyard into your library.

Smoldering Crater

Smoldering Crater enters tapped.
{T}: Add {R}.
Cycling {2} ({2}, Discard this card: Draw a card.)

Sandstone Warrior

First strike (This creature deals combat damage before creatures without first strike.)
{R}: Sandstone Warrior gets +1/+0 until end of turn.

Seedborn Muse

Untap all permanents you control during each other player's untap step.

Familiar Ground

Each creature you control can't be blocked by more than one creature.

Worldly Tutor

Search your library for a creature card, reveal it, then shuffle and put the card on top.

Flame Wave

Flame Wave deals 4 damage to target player or planeswalker and each creature that player or that planeswalker's controller controls.

Dense Foliage

Creatures can't be the targets of spells.

Llanowar Elves

Viridian Shaman

When Viridian Shaman enters, destroy target artifact.

Anaconda

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

Marsh Viper

Whenever Marsh Viper deals damage to a player, that player gets two poison counters. (A player with ten or more poison counters loses the game.)

Fecundity

Whenever a creature dies, that creature's controller may draw a card.

Teferi's Puzzle Box

At the beginning of each player's draw step, that player puts the cards in their hand on the bottom of their library in any order, then draws that many cards.

Sylvan Basilisk

Whenever Sylvan Basilisk becomes blocked by a creature, destroy that creature.

City of Brass

Whenever City of Brass becomes tapped, it deals 1 damage to you.
{T}: Add one mana of any color.

Mountain

Urza's Power Plant

{T}: Add {C}. If you control an Urza's Mine and an Urza's Tower, add {C}{C} instead.

Furnace of Rath

If a source would deal damage to a permanent or player, it deals double that damage to that permanent or player instead.

Marhault Elsdragon

Rampage 1 (Whenever this creature becomes blocked, it gets +1/+1 until end of turn for each creature blocking it beyond the first.)

Lightning Bolt

Lightning Bolt deals 3 damage to any target.

Demolish

Urza's Tower

{T}: Add {C}. If you control an Urza's Mine and an Urza's Power-Plant, add {C}{C}{C} instead.

Strip Mine

{T}: Add {C}.
{T}, Sacrifice Strip Mine: Destroy target land.

Beast of Burden

Beast of Burden's power and toughness are each equal to the number of creatures on the battlefield.

Birds of Paradise

Moss Diamond

Moss Diamond enters tapped.
{T}: Add {G}.

Loxodon Warhammer

Equipped creature gets +3/+0 and has trample and lifelink.
Equip {3}

Collective Unconscious

Draw a card for each creature you control.

Rowen

Reveal the first card you draw each turn. Whenever you reveal a basic land card this way, draw a card.

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.

Prevent all combat damage that would be dealt this turn.

Mana Flare

Whenever a player taps a land for mana, that player adds one mana of any type that land produced.

Seething Song

Forest

Manabarbs

Whenever a player taps a land for mana, Manabarbs deals 1 damage to that player.

Shivan Oasis

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

Verdant Force

At the beginning of each upkeep, create a 1/1 green Saproling creature token.

Naturalize

Urza's Bauble

{T}, Sacrifice Urza's Bauble: Look at a card at random in target player's hand. You draw a card at the beginning of the next turn's upkeep.

Vulshok Morningstar

Equipped creature gets +2/+2.
Equip {2} ({2}: Attach to target creature you control. Equip only as a sorcery.)

Crimson Hellkite

Flying
{X}, {T}: Crimson Hellkite deals X damage to target creature. Spend only red mana on X.

Inferno

Inferno deals 6 damage to each creature and each player.

Fireball

This spell costs {1} more to cast for each target beyond the first.
Fireball deals X damage divided evenly, rounded down, among any number of targets.