Tectonic Instability

Whenever a land enters, tap all lands its controller controls.

Desolation

At the beginning of each end step, each player who tapped a land for mana this turn sacrifices a land of their choice. This enchantment deals 2 damage to each player who sacrificed a Plains this way.

Mana Leech

You may choose not to untap this creature during your untap step.
{T}: Tap target land. It doesn't untap during its controller's untap step for as long as this creature remains tapped.

Calming Verse

Destroy all enchantments you don't control. Then if you control an untapped land, destroy all enchantments you control.

Monsoon

At the beginning of each player's end step, tap all untapped Islands that player controls and this enchantment deals X damage to the player, where X is the number of Islands tapped this way.

Pallimud

As this creature enters, choose an opponent.
Pallimud's power is equal to the number of tapped lands the chosen player controls.

Spur Grappler

This creature gets +2/+1 as long as you control no untapped lands.

Grand Marshal Macie

You may choose not to untap Grand Marshal Macie during your untap step. If you do, put a pause counter on it, then you lose 1 life for each pause counter on it.
Whenever Macie becomes untapped, remove all pause counters from it.
{2}, {T}: Choose an "until end of turn" or "this turn" effect. As long as Macie remains tapped, that effect doesn't end.

Stoneshaker Shaman

At the beginning of each player's end step, that player sacrifices an untapped land of their choice.

Citadel of Pain

At the beginning of each player's end step, this enchantment deals X damage to that player, where X is the number of untapped lands they control.

Waiting in the Weeds

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

Zombie Trailblazer

Tap an untapped Zombie you control: Target land becomes a Swamp until end of turn.
Tap an untapped Zombie you control: Target creature gains swampwalk until end of turn. (It can't be blocked as long as defending player controls a Swamp.)

Framed!

Choose an artist. Tap all untapped permanents with art by that artist or untap all tapped permanents with art by that artist.

Mages' Contest

You and target spell's controller bid life. You start the bidding with a bid of 1. In turn order, each player may top the high bid. The bidding ends if the high bid stands. The high bidder loses life equal to the high bid. If you win the bidding, counter that spell.

Well of Discovery

At the beginning of your end step, if you control no untapped lands, draw a card.

Scoria Cat

This creature gets +3/+3 as long as you control no untapped lands.

Ben-Ben, Akki Hermit

{T}: Ben-Ben deals damage to target attacking creature equal to the number of untapped Mountains you control.

Darksteel Garrison

Fortified land has indestructible.
Whenever fortified land becomes tapped, target creature gets +1/+1 until end of turn.
Fortify {3} ({3}: Attach to target land you control. Fortify only as a sorcery. This card enters unattached and stays on the battlefield if the land leaves.)

Voyaging Satyr

Burning Earth

Whenever a player taps a nonbasic land for mana, this enchantment deals 1 damage to that player.

Storage Matrix

As long as this artifact is untapped, each player chooses artifact, creature, or land during their untap step. That player can untap only permanents of the chosen type this step.

Wood Elemental

As this creature enters, sacrifice any number of untapped Forests.
Wood Elemental's power and toughness are each equal to the number of Forests sacrificed as it entered.

Zhur-Taa Ancient

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

Silt Crawler

When this creature enters, tap all lands you control.

Blossom Dryad

Toil to Renown

You gain 1 life for each tapped artifact, creature, and land you control.

Vintara Snapper

This creature has shroud as long as you control no untapped lands. (It can't be the target of spells or abilities.)

Psychic Venom

Enchant land
Whenever enchanted land becomes tapped, this Aura deals 2 damage to that land's controller.

Reveille Squad

Whenever one or more creatures attack you, if this creature is untapped, you may untap all creatures you control.

Maraxus of Keld

Maraxus's power and toughness are each equal to the number of untapped artifacts, creatures, and lands you control.

Well of Life

At the beginning of your end step, if you control no untapped lands, you gain 2 life.

Piracy

Until end of turn, you may tap lands you don't control for mana. Spend this mana only to cast spells.

Scalding Tongs

At the beginning of your upkeep, if you have three or fewer cards in hand, this artifact deals 1 damage to target opponent or planeswalker.

Troublesome Spirit

Flying
At the beginning of your end step, tap all lands you control.

Power Surge

At the beginning of each player's upkeep, this enchantment deals X damage to that player, where X is the number of untapped lands they controlled at the beginning of this turn.

Mana Short

Tap all lands target player controls and that player loses all unspent mana.

Fen Stalker

This creature has fear as long as you control no untapped lands. (It can't be blocked except by artifact creatures and/or black creatures.)

Veteran Brawlers

This creature can't attack if defending player controls an untapped land.
This creature can't block if you control an untapped land.

Manabarbs

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

Eladamri's Vineyard

At the beginning of each player's first main phase, that player adds {G}{G}.

Blinkmoth Urn

At the beginning of each player's first main phase, if this artifact is untapped, that player adds {C} for each artifact they control.

Chimeric Idol

{0}: Tap all lands you control. This artifact becomes a 3/3 Turtle artifact creature until end of turn.

Mungha Wurm

You can't untap more than one land during your untap step.

Magus of the Vineyard

Spectral Searchlight

{T}: Choose a player. That player adds one mana of any color they choose.

Wild Growth

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

Wolfwillow Haven

Enchant land
Whenever enchanted land is tapped for mana, its controller adds an additional {G}.
{4}{G}, Sacrifice this Aura: Create a 2/2 green Wolf creature token. Activate only during your turn.

Scald

Whenever a player taps an Island for mana, this enchantment deals 1 damage to that player.

Branded Brawlers

Hollow Warrior

This creature can't attack or block unless you tap an untapped creature you control not declared as an attacking or blocking creature this combat. (This cost is paid as attackers or blockers are declared.)

Valleymaker

{T}, Sacrifice a Mountain: This creature deals 3 damage to target creature.
{T}, Sacrifice a Forest: Choose a player. That player adds {G}{G}{G}.

Thoughtleech

Whenever an Island an opponent controls becomes tapped, you may gain 1 life.

Pale Moon

Until end of turn, if a player taps a nonbasic land for mana, it produces colorless mana instead of any other type.

Mana Flare

Pretender's Claim

Enchant creature
Whenever enchanted creature becomes blocked, tap all lands defending player controls.

Overabundance

Whenever a player taps a land for mana, that player adds one mana of any type that land produced, and this enchantment deals 1 damage to the player.

Mana Cache

At the beginning of each player's end step, put a charge counter on this enchantment for each untapped land that player controls.
Remove a charge counter from this enchantment: Add {C}. Any player may activate this ability but only during their turn before the end step.

Keldon Berserker

Whenever this creature attacks, if you control no untapped lands, it gets +3/+0 until end of turn.

Hazy Homunculus

This creature can't be blocked as long as defending player controls an untapped land.

Ley Druid

Roots of Life

As this enchantment enters, choose Island or Swamp.
Whenever a land of the chosen type an opponent controls becomes tapped, you gain 1 life.