Soured Springs enters the battlefield tapped.

When Soured Springs enters the battlefield, it deals 1 damage to target opponent.

: Add or .

: Add .

, , Sacrifice Spawning Bed: Create three 1/1 colorless Eldrazi Scion creature tokens. They have "Sacrifice this creature: Add ."

Spectator Seating enters the battlefield tapped unless you have two or more opponents.

: Add or .

Hideaway 4 (When this land enters the battlefield, look at the top four cards of your library, exile one face down, then put the rest on the bottom in a random order.)

Spinerock Knoll enters the battlefield tapped.

: Add .

, : You may play the exiled card without paying its mana cost if an opponent was dealt 7 or more damage this turn.

: Add .

, Pay 1 life: Add one mana of any color. Activate only if you control an artifact.

(Transforms from Thaumatic Compass.)

: Add .

: Untap target attacking creature an opponent controls and remove it from combat.

: Add .

, : Create a 0/1 white Goat creature token.

, Sacrifice X Goats: Add X mana of any one color. You gain X life.

: Add .

: Stalking Stones becomes a 3/3 Elemental artifact creature that's still a land. (This effect lasts indefinitely.)

(: Add or .)

As Steam Vents enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

Stirring Wildwood enters the battlefield tapped.

: Add or .

: Until end of turn, Stirring Wildwood becomes a 3/4 green and white Elemental creature with reach. It's still a land.

Stone Quarry enters the battlefield tapped.

: Add or .

: Add .

, Sacrifice Strip Mine: Destroy target land.

: Add .

, : Add one mana of any color. When you spend this mana to cast your commander, scry X, where X is the number of times it's been cast from the command zone this game.

Subterranean Hangar enters the battlefield tapped.

: Put a storage counter on Subterranean Hangar.

, Remove any number of storage counters from Subterranean Hangar: Add for each storage counter removed this way.

Sulfur Vent enters the battlefield tapped.

: Add .

, Sacrifice Sulfur Vent: Add .

: Add .

: Add or . Sulfurous Springs deals 1 damage to you.

Sundown Pass enters the battlefield tapped unless you control two or more other lands.

: Add or .

: Add .

, : Target creature gains double strike until end of turn.

(: Add or .)

Sunken Hollow enters the battlefield tapped unless you control two or more basic lands.

: Add .

, : Add , , or .

Sunpetal Grove enters the battlefield tapped unless you control a Forest or a Plains.

: Add or .

, : Add .

: Add .

, Tap an untapped creature you control: Add one mana of any color.

Svyelunite Temple enters the battlefield tapped.

: Add .

, Sacrifice Svyelunite Temple: Add .

: Add .

: Regenerate target Insect, Rat, Spider, or Squirrel. (The next time it would be destroyed, instead tap it, remove it from combat, and heal all damage on it.)

(: Add or .)

: Add .

: Add or . Activate only if you control a Swamp.

: Add .

: Add or . Activate only if you control a Swamp.

: Add .

Channel — , Discard Takenuma, Abandoned Mire: Mill three cards, then return a creature or planeswalker card from your graveyard to your hand. This ability costs less to activate for each legendary creature you control.

(: Add or .)

Tangled Islet enters the battlefield tapped.

Tanglepool Bridge enters the battlefield tapped.

Indestructible

: Add or .

Tarnation Vista enters the battlefield tapped. As it enters, choose a color.

: Add one mana of the chosen color.

, : For each color among monocolored permanents you control, add one mana of that color.

: Add .

, , Sacrifice Tectonic Edge: Destroy target nonbasic land. Activate only if an opponent controls four or more lands.

Teetering Peaks enters the battlefield tapped.

When Teetering Peaks enters the battlefield, target creature gets +2/+0 until end of turn.

: Add .

(: Add or .)

As Temple Garden enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

(Transforms from Arguel's Blood Fast.)

: Add .

, Sacrifice a creature: You gain life equal to the sacrificed creature's toughness.

(Transforms from Ojer Kaslem, Deepest Growth.)

: Add .

, : Transform Temple of Cultivation. Activate only if you control ten or more permanents and only as a sorcery.

Temple of Deceit enters the battlefield tapped.

When Temple of Deceit enters the battlefield, scry 1.

: Add or .

Temple of Epiphany enters the battlefield tapped.

When Temple of Epiphany enters the battlefield, scry 1.

: Add or .

Temple of Malice enters the battlefield tapped.

When Temple of Malice enters the battlefield, scry 1.

: Add or .

Temple of Plenty enters the battlefield tapped.

When Temple of Plenty enters the battlefield, scry 1.

: Add or .

Temple of Silence enters the battlefield tapped.

When Temple of Silence enters the battlefield, scry 1.

: Add or .

As Temple of the Dragon Queen enters the battlefield, you may reveal a Dragon card from your hand. Temple of the Dragon Queen enters the battlefield tapped unless you revealed a Dragon card this way or you control a Dragon.

As Temple of the Dragon Queen enters the battlefield, choose a color.

: Add one mana of the chosen color.

Temple of Triumph enters the battlefield tapped.

When Temple of Triumph enters the battlefield, scry 1.

: Add or .

: Add .

, , Sacrifice Terminal Moraine: Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.

, Sacrifice Terramorphic Expanse: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

Thawing Glaciers enters the battlefield tapped.

, : Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle. Return Thawing Glaciers to its owner's hand at the beginning of the next cleanup step.

: Add .

, : Look at the top card of your library. If it's an instant or sorcery card, you may reveal it and put it into your hand. If you don't put the card into your hand, you may put it into your graveyard. Activate only if you have exactly zero or seven cards in hand.

As The Black Gate enters the battlefield, you may pay 3 life. If you don't, it enters the battlefield tapped.

: Add .

, : Choose a player with the most life or tied for most life. Target creature can't be blocked by creatures that player controls this turn.

The Dross Pits enters the battlefield tapped.

: Add .

, , Sacrifice The Dross Pits: Draw a card.