Whenever a permanent enters the battlefield tapped and under your control, untap it.

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

You may play lands from your graveyard. {T}: Choose target nonland permanent card in your graveyard. If you haven't cast a spell this turn, you may cast that card. If you do, you can't cast additional spells this turn. Activate only as a sorcery.

You may play lands from your graveyard.

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

At the beginning of your upkeep, flip a coin. If you lose the flip, Mana Crypt deals 3 damage to you. {T}: Add {C}{C}.

Reach You may play lands from your graveyard. If a land entering the battlefield causes a triggered ability of a permanent you control to trigger, that ability triggers an additional time.

When Avenger of Zendikar enters the battlefield, create a 0/1 green Plant creature token for each land you control. Landfall — Whenever a land enters the battlefield under your control, you may put a +1/+1 counter on each Plant creature you control.

You may play two additional lands on each of your turns.

Flying {T}: Add one mana of any color.

At the beginning of your end step, you may sacrifice an artifact, creature, enchantment, land, or planeswalker. If you do, each opponent may sacrifice a permanent that shares a card type with it. For each opponent who doesn't, that player loses 2 life and you draw a card.

You may play an additional land on each of your turns. Lands you control are every basic land type in addition to their other types.

When Eternal Witness enters the battlefield, you may return target card from your graveyard to your hand.

Exalted (Whenever a creature you control attacks alone, that creature gets +1/+1 until end of turn.) {T}: Add {B}, {R}, or {G}.

When Keldon Firebombers enters the battlefield, each player sacrifices all lands they control except for three.

Landfall — Whenever a land enters the battlefield under your control, add one mana of any color.

You may play an additional land on each of your turns. Play with the top card of your library revealed. You may play lands from the top of your library.

You may play lands from your graveyard.

Whenever Soul of Windgrace enters the battlefield or attacks, you may put a land card from a graveyard onto the battlefield tapped under your control. {G}, Discard a land card: You gain 3 life. {1}{R}, Discard a land card: Draw a card. {2}{B}, Discard a land card: Soul of Windgrace gains indestructible until end of turn. Tap it.

Deathtouch At the beginning of your upkeep, sacrifice The Gitrog Monster unless you sacrifice a land. You may play an additional land on each of your turns. Whenever one or more land cards are put into your graveyard from anywhere, draw a card.

When Titania, Protector of Argoth enters the battlefield, return target land card from your graveyard to the battlefield. Whenever a land you control is put into a graveyard from the battlefield, create a 5/3 green Elemental creature token.

Reach Whenever one or more land cards are put into your graveyard from anywhere, you gain 2 life. At the beginning of your upkeep, if there are four or more land cards in your graveyard and you both own and control Titania, Voice of Gaea and a land named Argoth, Sanctum of Nature, exile them, then meld them into Titania, Gaea Incarnate.

Nonbasic lands are Mountains.

Whenever an opponent plays a land, you may put a land card from your hand onto the battlefield.

At the beginning of each player's upkeep, that player sacrifices a nonbasic land.

You may play an additional land on each of your turns.

At the beginning of your upkeep, if there are seven or more lands on the battlefield, sacrifice Impending Disaster and destroy all lands.

Whenever a player taps a land for mana, if it's not that player's turn, destroy that land.

Lands you control are every basic land type in addition to their other types.

When Spelunking enters the battlefield, draw a card, then you may put a land card from your hand onto the battlefield. If you put a Cave onto the battlefield this way, you gain 4 life. Lands you control enter the battlefield untapped.

Sacrifice a land: Add one mana of any type the sacrificed land could produce.

This spell can't be countered. Destroy target nonland permanent with mana value 3 or less.

Destroy target permanent an opponent controls. Its controller may search their library for a basic land card, put it onto the battlefield, then shuffle.

If it's not your turn, you may exile a green card from your hand rather than pay this spell's mana cost. Destroy up to two target artifacts and/or enchantments.

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.

Search your library for up to four land cards with different names and reveal them. An opponent chooses two of those cards. Put the chosen cards into your graveyard and the rest into your hand. Then shuffle.

Search your library for a card, then shuffle and put that card on top. You lose 2 life.

Argoth, Sanctum of Nature enters the battlefield tapped unless you control a legendary green creature. {T}: Add {G}. {2}{G}{G}, {T}: Create a 2/2 green Bear creature token, then mill three cards. Activate only as a sorcery. (Melds with Titania, Voice of Gaea.)

{T}, Pay 1 life, Sacrifice Arid Mesa: Search your library for a Mountain or Plains card, put it onto the battlefield, then shuffle.

({T}: Add {B} or {R}.) As Blood Crypt enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

{T}, Pay 1 life, Sacrifice Bloodstained Mire: Search your library for a Swamp or Mountain card, put it onto the battlefield, then shuffle.

{T}: Add {G}. Channel — {1}{G}, Discard Boseiju, Who Endures: Destroy target artifact, enchantment, or nonbasic land an opponent controls. That player may search their library for a land card with a basic land type, put it onto the battlefield, then shuffle. This ability costs {1} less to activate for each legendary creature you control.

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

You may have Echoing Deeps enter the battlefield tapped as a copy of any land card in a graveyard, except it's a Cave in addition to its other types. {T}: Add {C}.

{T}, Sacrifice Fabled Passage: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle. Then if you control four or more lands, untap that land.

Field of the Dead enters the battlefield tapped. {T}: Add {C}. Whenever Field of the Dead or another land enters the battlefield under your control, if you control seven or more lands with different names, create a 2/2 black Zombie creature token.

({T}: Add {G}.)

Golgari Rot Farm enters the battlefield tapped. When Golgari Rot Farm enters the battlefield, return a land you control to its owner's hand. {T}: Add {B}{G}.

Gruul Turf enters the battlefield tapped. When Gruul Turf enters the battlefield, return a land you control to its owner's hand. {T}: Add {R}{G}.

Hexproof Lotus Field enters the battlefield tapped. When Lotus Field enters the battlefield, sacrifice two lands. {T}: Add three mana of any one color.

({T}: Add {R}.)

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

{T}, Pay 1 life, Sacrifice Polluted Delta: Search your library for an Island or Swamp card, put it onto the battlefield, then shuffle.

Rakdos Carnarium enters the battlefield tapped. When Rakdos Carnarium enters the battlefield, return a land you control to its owner's hand. {T}: Add {B}{R}.

{T}: Add one mana of any type that a land you control could produce.

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

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

({T}: Add {B}.)

Valakut, the Molten Pinnacle enters the battlefield tapped. Whenever a Mountain enters the battlefield under your control, if you control at least five other Mountains, you may have Valakut, the Molten Pinnacle deal 3 damage to any target. {T}: Add {R}.

{T}, Pay 1 life, Sacrifice Verdant Catacombs: Search your library for a Swamp or Forest card, put it onto the battlefield, then shuffle.

You may have Vesuva enter the battlefield tapped as a copy of any land on the battlefield.

{T}, Pay 1 life, Sacrifice Windswept Heath: Search your library for a Forest or Plains card, put it onto the battlefield, then shuffle.

{T}, Pay 1 life, Sacrifice Wooded Foothills: Search your library for a Mountain or Forest card, put it onto the battlefield, then shuffle.

Lands you control have "{T}: Add one mana of any color." +1: Up to one target land you control becomes a 3/3 Elemental creature with vigilance, hexproof, and haste until your next turn. It's still a land. −2: Mill three cards. You may put a permanent card from among the milled cards into your hand. −7: You get an emblem with "You may play lands and cast permanent spells from your graveyard."

+1: Reveal the top four cards of your library. Put all land cards revealed this way into your hand and the rest into your graveyard. 0: Put any number of land cards from your hand onto the battlefield tapped. −3: Create a green Treefolk creature token with reach and "This creature's power and toughness are each equal to the number of lands you control." −8: Return all permanent cards from your graveyard to your hand. You get an emblem with "You have no maximum hand size."

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.

Destroy all creatures. They can't be regenerated.

Destroy target artifact, target creature, target enchantment, and target land. (You can't cast this spell unless you have legal choices for all its targets.)

Exile all artifacts, creatures, and lands from the battlefield, all cards from all graveyards, and all cards from all hands. Cycling {5}{R}{R} ({5}{R}{R}, Discard this card: Draw a card.) When you cycle Decree of Annihilation, destroy all lands.

Search your library for a card, put that card into your hand, then shuffle.

Each player sacrifices five lands. Destructive Force deals 5 damage to each creature.

Cleave {1}{B}{B}{G} (You may cast this spell for its cleave cost. If you do, remove the words in square brackets.) Search your library for a [basic land] card, [reveal it,] put it into your hand, then shuffle.

Target player sacrifices a land. Threshold — Each player sacrifices all lands they control instead if seven or more cards are in your graveyard.

Search your library for a card, put that card into your hand, then shuffle. You lose 3 life.

Choose one. If you control a commander as you cast this spell, you may choose both instead. • Add {R} for each card in target opponent's hand. • Exile the top three cards of your library. You may play them this turn.

Destroy all artifacts, creatures, and lands. They can't be regenerated.

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.

Return up to three target land cards from your graveyard to your hand. Dredge 3 (If you would draw a card, you may mill three cards instead. If you do, return this card from your graveyard to your hand.)

This spell can't be countered. Destroy all artifacts, creatures, and lands. They can't be regenerated.

Sacrifice any number of lands. Search your library for up to that many land cards, put them onto the battlefield tapped, then shuffle.

Return all land cards from your graveyard to the battlefield tapped.

Each player sacrifices X lands.

Destroy target artifact you don't control. Overload {4}{R} (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")