mtg.wtf

Salt Flats enters tapped.
{T}: Add {C}.
{T}: Add {W} or {B}. Salt Flats deals 1 damage to you.

Salt Marsh enters tapped.
{T}: Add {U} or {B}.

{T}: Add {C}.
{1}, {T}: Put a storage counter on Saltcrusted Steppe.
{1}, Remove X storage counters from Saltcrusted Steppe: Add X mana in any combination of {G} and/or {W}.

Put target card from your graveyard on top of your library.

Devoid
Ingest
When Salvage Drone dies, you may draw a card. If you do, discard a card.

{W}, Sacrifice Salvage Scout: Return target artifact card from your graveyard to your hand.

Return target creature card from your graveyard to your hand. The Ring tempts you.

Enchant creature
Enchanted creature has "{T}: The next time a source of your choice would deal damage to target creature this turn, prevent that damage."

{W}, Sacrifice Samite Censer-Bearer: Prevent the next 1 damage that would be dealt to each creature you control this turn.

Target creature gets +2/+1 and gains haste until end of turn. Scry 1.

{T}: Add {C}.
{2}, {T}: Return target commander you own from the battlefield to your hand. Activate only during your turn.

When you planeswalk away from Sanctum of Serra, destroy all nonland permanents.
Whenever chaos ensues, you may have your life total become 20.

{5}{W}: Tap target creature. This ability costs {1} less to activate for each Shrine you control.

{T}: Add {C}.
Whenever you cast a colorless spell with mana value 7 or greater, you may sacrifice Sanctum of Ugin. If you do, search your library for a colorless creature card, reveal it, put it into your hand, then shuffle.

Sand Silos enters tapped.
You may choose not to untap Sand Silos during your untap step.
At the beginning of your upkeep, if Sand Silos is tapped, put a storage counter on it.
{T}, Remove any number of storage counters from Sand Silos: Add {U} for each storage counter removed this way.

Cycling {2}

Sandsteppe Citadel enters tapped.
{T}: Add {W}, {B}, or {G}.

Sandstone Bridge enters tapped.
When Sandstone Bridge enters, target creature gets +1/+1 and gains vigilance until end of turn.
{T}: Add {W}.

Sandstone Needle enters tapped with two depletion counters on it.
{T}, Remove a depletion counter from Sandstone Needle: Add {R}{R}. If there are no depletion counters on Sandstone Needle, sacrifice it.

Sandstorm deals 1 damage to each attacking creature.

{T}: Add {C}.
{3}, {T}: Target creature can't block this turn. Activate only as a sorcery.

Sanguine Morass enters tapped.
{T}: Add {B} or {R}.

{2}{B}: Return Sanitarium Skeleton from your graveyard to your hand.

Whenever you crank Sap Sucker, add {G}. Until end of turn, you don't lose this mana as steps and phases end.