You can't play lands.

Sacrifice a land: Draw two cards. Activate only once each turn.

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.

Ascend (If you control ten or more permanents, you get the city's blessing for the rest of the game.)

{T}: Add {C}.

{5}, {T}: Draw a card. Activate only if you have the city's blessing.

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.

Put nine +1/+1 counters on target land you control. It becomes a legendary 0/0 Elemental creature with haste named Vitu-Ghazi. It's still a land.

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

Blast Zone enters the battlefield with a charge counter on it.

{T}: Add {C}.

{X}{X}, {T}: Put X charge counters on Blast Zone.

{3}, {T}, Sacrifice Blast Zone: Destroy each nonland permanent with mana value equal to the number of charge counters on Blast Zone.

{T}: You may put a land card from your hand onto the battlefield. If you control ten or more lands, flip Budoka Gardener.

{4}{G}{G}, {T}: Create an X/X green Elemental creature token, where X is the number of lands you control.

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

{T}: Add {C}.

{2}, {T}, Sacrifice Buried Ruin: Return target artifact card from your graveyard to your hand.

({T}: Add {R} or {G}.)

Cinder Glade enters the battlefield tapped unless you control two or more basic lands.

Buyback--Sacrifice a land. (You may sacrifice a land in addition to any other costs as you cast this spell. If you do, put this card into your hand as it resolves.)

Prevent all combat damage that would be dealt this turn.

Play with the top card of your library revealed.

You may play lands from the top of your library.

Landfall -- Whenever a land enters the battlefield under your control, you gain 1 life.

Choose a permanent type. Return all cards of the chosen type from your graveyard to your hand.

Flashback {5}{G}{G} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

As an additional cost to cast this spell, sacrifice a land.

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

You may play lands from your graveyard.

{T}: Add {C}.

{1}, {T}, Sacrifice Cryptic Caves: Draw a card. Activate only if you control five or more lands.

Dark Depths enters the battlefield with ten ice counters on it.

{3}: Remove an ice counter from Dark Depths.

When Dark Depths has no ice counters on it, sacrifice it. If you do, create Marit Lage, a legendary 20/20 black Avatar creature token with flying and indestructible.

Desert of the Fervent enters the battlefield tapped.

{T}: Add {R}.

Cycling {1}{R} ({1}{R}, Discard this card: Draw a card.)

Desert of the Indomitable enters the battlefield tapped.

{T}: Add {G}.

Cycling {1}{G} ({1}{G}, Discard this card: Draw a card.)

(Dryad Arbor isn't a spell, it's affected by summoning sickness, and it has "{T}: Add {G}.")

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.

Elvish Reclaimer gets +2/+2 as long as there are three or more land cards in your graveyard.

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

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

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

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}.)

({T}: Add {G}.)

({T}: Add {G}.)

({T}: Add {G}.)

({T}: Add {G}.)

({T}: Add {G}.)

({T}: Add {G}.)

Forgotten Cave enters the battlefield tapped.

{T}: Add {R}.

Cycling {R} ({R}, Discard this card: Draw a card.)

Each player may play an additional land on each of their turns.

At the beginning of each player's upkeep, if that player has no cards in hand, that player draws three cards.

Ghitu Encampment enters the battlefield tapped.

{T}: Add {R}.

{1}{R}: Ghitu Encampment becomes a 2/1 red Warrior creature with first strike until end of turn. It's still a land. (It deals combat damage before creatures without first strike.)

Cumulative upkeep--Pay 2 life. (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)

When Glacial Chasm enters the battlefield, sacrifice a land.

Creatures you control can't attack.

Prevent all damage that would be dealt to you.

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}.

{T}: Add {C}.

{3}, {T}, Sacrifice Haunted Fengraf: Return a creature card at random from your graveyard to your hand.

{T}: Add {C}.

{T}, Sacrifice a creature: You gain 1 life.

({T}: Add {R} or {G}.)

Highland Forest enters the battlefield tapped.

Whenever a player plays a land, that player draws a card.

Search your library for up to two land cards, put them onto the battlefield tapped, then shuffle. Then if you control three or more Deserts, create two 2/2 black Zombie creature tokens.

{T}: Add {C}.

{1}: Inkmoth Nexus becomes a 1/1 Phyrexian Blinkmoth artifact creature with flying and infect until end of turn. It's still a land. (It deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)

{T}: Add {C}.

{X}{R}{G}, {T}: Target creature gets +X/+0 and gains trample until end of turn.

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.)

{1}{R}, Discard a land card: Living Twister deals 2 damage to any target.

{G}: Return a tapped land you control to its owner's hand.

{T}: You may put a land card from your hand onto the battlefield.

At the beginning of your end step, you may reveal your hand and put all land cards from it onto the battlefield. If you do, discard your hand.

{T}: Untap target attacking creature. Prevent all combat damage that would be dealt to and dealt by that creature this turn.

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

{R}{G}, Return a land you control to its owner's hand: Target creature gains trample until end of turn.

{2}: Mirage Mirror becomes a copy of target artifact, creature, enchantment, or land until end of turn.

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

Mountain Valley enters the battlefield tapped.

{T}, Sacrifice Mountain Valley: Search your library for a Mountain or Forest card, put it onto the battlefield, then shuffle.

Reach, trample

Multani, Yavimaya's Avatar gets +1/+1 for each land you control and each land card in your graveyard.

{1}{G}, Return two lands you control to their owner's hand: Return Multani from your graveyard to your hand.

+1: Untap target land you control. Until your next turn, it becomes a 5/5 Elemental creature with haste. It's still a land.

-3: Return target permanent card from your graveyard to your hand.

-6: You get an emblem with "Whenever a land enters the battlefield under your control, you may draw a card."

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.

{T}: Add {C}.

{T}, Sacrifice Petrified Field: Return target land card from your graveyard to your hand.

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

Return a Forest you control to its owner's hand: Untap target creature. Activate only once each turn.

As long as it's your turn, Radha, Heart of Keld has first strike.

You may look at the top card of your library any time, and you may play lands from the top of your library.

{4}{R}{G}: Radha gets +X/+X until end of turn, where X is the number of lands you control.

Raging Ravine enters the battlefield tapped.

{T}: Add {R} or {G}.

{2}{R}{G}: Until end of turn, Raging Ravine becomes a 3/3 red and green Elemental creature with "Whenever this creature attacks, put a +1/+1 counter on it." It's still a land.

Trample

Landfall -- Whenever a land enters the battlefield under your control, you may create a 4/4 green Beast creature token.

You may play lands from your graveyard.

Realm Seekers enters the battlefield with X +1/+1 counters on it, where X is the total number of cards in all players' hands.

{2}{G}, Remove a +1/+1 counter from Realm Seekers: Search your library for a land card, reveal it, put it into your hand, 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.

At the beginning of each player's draw step, that player draws an additional card.

Each player may play an additional land on each of their turns.

Rubblehulk's power and toughness are each equal to the number of lands you control.

Bloodrush -- {1}{R}{G}, Discard Rubblehulk: Target attacking creature gets +X/+X until end of turn, where X is the number of lands you control.

{T}: You may put a land card from your hand onto the battlefield.

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

Flash

Flying, protection from blue

Return a Forest you control to its owner's hand: Untap target creature. Activate only once each turn.

Landfall -- Whenever a land enters the battlefield under your control, create a 1/1 green Insect creature token. If you control six or more lands, create a token that's a copy of Scute Swarm instead.

Landfall -- Whenever a land enters the battlefield under your control, you may pay {2}. If you do, draw a card.

({T}: Add {R} or {G}.)

Sheltered Thicket enters the battlefield tapped.

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

Slippery Karst enters the battlefield tapped.

{T}: Add {G}.

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

Smoldering Crater enters the battlefield tapped.

{T}: Add {R}.

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

Enchant permanent

Enchanted permanent is a colorless Forest land.

Landfall -- Whenever a land enters the battlefield under your control, Spitfire Lagac deals 1 damage to each opponent.

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

({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.

Each player may play an additional land during each of their turns.

Whenever a land is tapped for mana, return it to its owner's hand.

{T}: Add {C}.

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

When Sunscorched Desert enters the battlefield, it deals 1 damage to target player or planeswalker.

{T}: Add {C}.

Sacrifice a land: Target creature you control gains shroud until end of turn. (It can't be the target of spells or abilities.)

Search your library for a land card, reveal it, put it into your hand, then shuffle.

({T}: Add {R} or {G}.)

Each land card in your hand has cycling {R}.

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

{T}: Add {C}.

{2}, {T}: Thespian's Stage becomes a copy of target land, except it has this ability.

Landfall -- Whenever a land enters the battlefield under your control, investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this artifact: Draw a card.")

Whenever you sacrifice a Clue, put a +1/+1 counter on Tireless Tracker.

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.

Tranquil Thicket enters the battlefield tapped.

{T}: Add {G}.

Cycling {G} ({G}, Discard this card: Draw a card.)

Treetop Village enters the battlefield tapped.

{T}: Add {G}.

{1}{G}: Treetop Village becomes a 3/3 green Ape creature with trample until end of turn. It's still a land. (It can deal excess combat damage to the player or planeswalker it's attacking.)

Landfall -- Whenever a land enters the battlefield under your control, exile the top card of your library. You may play that card for as long as it remains exiled.

At the beginning of your end step, if there are cards exiled with Valakut Exploration, put them into their owner's graveyard, then Valakut Exploration deals that much damage to each opponent.

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}.

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

{T}: You may put a land card from your hand onto the battlefield.

Ascend (If you control ten or more permanents, you get the city's blessing for the rest of the game.)

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

Wayward Swordtooth can't attack or block unless you have the city's blessing.

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

Devoid (This card has no color.)

When you cast this spell, exile target artifact, enchantment, or land.

Reach

{2}{C}, Sacrifice a land: Return World Breaker from your graveyard to your hand. ({C} represents colorless mana.)

Whenever World Shaper attacks, you may mill three cards.

When World Shaper dies, return all land cards from your graveyard to the battlefield tapped.

+1: Return up to one target land card from your graveyard to your hand.

-1: Wrenn and Six deals 1 damage to any target.

-7: You get an emblem with "Instant and sorcery cards in your graveyard have retrace." (You may cast instant and sorcery cards from your graveyard by discarding a land card in addition to paying their other costs.)

Sacrifice a land: You gain 2 life.