You may play an additional land each of your turns.

Return up to three target land cards from your graveyard to your hand.
Dredge 3

: Add to your mana pool.
: Mishra's Factory becomes a 2/2 Assembly-Worker artifact creature until end of turn. It's still a land.
: Target Assembly-Worker creature gets +1/+1 until end of turn.

: Add to your mana pool.
, Sacrifice Wasteland: Destroy target nonbasic land.

At the beginning of your upkeep, reveal the top card of your library and put that card into your hand. You lose life equal to its converted mana cost.

If Mox Diamond would enter the battlefield, you may discard a land card instead. If you do, put Mox Diamond onto the battlefield. If you don't, put it into its owner's graveyard.
: Add one mana of any color to your mana pool.

Tranquil Thicket enters the battlefield tapped.
: Add to your mana pool.
Cycling

Search your library for any three cards and reveal them. Target opponent chooses one. Put that card into your hand and the rest into your graveyard. Then shuffle your library.

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

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

: Add to your mana pool.
, Sacrifice Ghost Quarter: Destroy target land. Its controller may search his or her library for a basic land card, put it onto the battlefield, then shuffle his or her library.

You may play land cards from your graveyard.

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

All creatures have "At the beginning of your upkeep, destroy this creature unless you pay ."

: Add to your mana pool.
, : Put target artifact card from your graveyard on top of your library.

: Add to your mana pool. Cabal Pit deals 1 damage to you.
Threshold - , , Sacrifice Cabal Pit: Target creature gets -2/-2 until end of turn. Activate this ability only if seven or more cards are in your graveyard.

: Add to your mana pool.
As long as Riftstone Portal is in your graveyard, lands you control have ": Add or to your mana pool."

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.

: Add to your mana pool.
, : Put target creature card from your graveyard on top of your library.

Sunburst
, Sacrifice Engineered Explosives: Destroy each nonland permanent with converted mana cost equal to the number of charge counters on Engineered Explosives.

: Add to your mana pool.
, , Sacrifice a land: Destroy target nonbasic land.

Choose two - Target player loses X life; or return target creature card with converted mana cost X or less from your graveyard to the battlefield; or target creature gets -X/-X until end of turn; or up to X target creatures gain fear until end of turn.

: Add to your mana pool. Cephalid Coliseum deals 1 damage to you.
Threshold - , , Sacrifice Cephalid Coliseum: Target player draws three cards, then discards three cards. Activate this ability only if seven or more cards are in your graveyard.

Cumulative upkeep - Pay 2 life.
When Glacial Chasm enters the battlefield, sacrifice a land.
Creatures you control can't attack.
Prevent all damage that would be dealt to you.

: Exile the bottom card of target player's graveyard.
, Sacrifice Phyrexian Furnace: Exile target card from a graveyard. Draw a card.

, Sacrifice Tormod's Crypt: Exile all cards from target player's graveyard.

As The Rack enters the battlefield, choose an opponent.
At the beginning of the chosen player's upkeep, The Rack deals X damage to that player, where X is 3 minus the number of cards in his or her hand.

Chalice of the Void enters the battlefield with X charge counters on it.
Whenever a player casts a spell with converted mana cost equal to the number of charge counters on Chalice of the Void, counter that spell.

As Pithing Needle enters the battlefield, name a card.
Activated abilities of sources with the chosen name can't be activated unless they're mana abilities.

Split second
Destroy target artifact or enchantment.

Flying
Whenever Trygon Predator deals combat damage to a player, you may destroy target artifact or enchantment that player controls.

When Trinket Mage enters the battlefield, you may search your library for an artifact card with converted mana cost 1 or less, reveal that card, and put it into your hand. If you do, shuffle your library.

Sacrifice a land: You gain 2 life.