mtg.wtf

At the beginning of the game, choose a creature type. Creatures you control, creature spells you control, and creature cards you own in any zone other than the battlefield or the stack have the chosen type in addition to their other types.

{1}, {T}: Add {B}{R}.

Shadowy Backstreet enters tapped.
When Shadowy Backstreet enters, surveil 1.

Shambling Vent enters tapped.
{T}: Add {W} or {B}.
{1}{W}{B}: Shambling Vent becomes a 2/3 white and black Elemental creature with lifelink until end of turn. It's still a land.

{T}: Add {C}.
{T}, Sacrifice Shattered Landscape: Search your library for a basic Mountain, Plains, or Swamp card, put it onto the battlefield tapped, then shuffle.
Cycling {R}{W}{B}

Shattered Sanctum enters tapped unless you control two or more other lands.
{T}: Add {W} or {B}.

As Shatterskull, the Hammer Pass enters, you may pay 3 life. If you don't, it enters tapped.
{T}: Add {R}.

{T}: Add {C}.
{T}, Pay 1 life: Add {W}.
{2}{W}{W}, {T}, Sacrifice a Desert: Creatures you control get +1/+1 until end of turn. Activate only as a sorcery.

Hideaway 4
Shelldock Isle enters tapped.
{T}: Add {U}.
{U}, {T}: You may play the exiled card without paying its mana cost if a library has twenty or fewer cards in it.

Sheltered Thicket enters tapped.
Cycling {2}

If Sheltered Valley would enter, instead sacrifice each other permanent named Sheltered Valley you control, then put Sheltered Valley onto the battlefield.
At the beginning of your upkeep, if you control three or fewer lands, you gain 1 life.
{T}: Add {C}.

{T}: Add {C}.
{T}, Sacrifice Sheltering Landscape: Search your library for a basic Mountain, Forest, or Plains card, put it onto the battlefield tapped, then shuffle.
Cycling {R}{G}{W}

Defender
Whenever Shield Sphere blocks, put a -0/-1 counter on it.

Defender
Shifting Wall enters with X +1/+1 counters on it.

Shifting Woodland enters tapped unless you control a Forest.
{T}: Add {G}.
Delirium — {2}{G}{G}: Shifting Woodland becomes a copy of target permanent card in your graveyard until end of turn. Activate only if there are four or more card types among cards in your graveyard.

Shimmerdrift Vale enters tapped.
As Shimmerdrift Vale enters, choose a color.
{T}: Add one mana of the chosen color.

{T}: Add {C}.
{1}, {T}: Add one mana of any color.

As Shineshadow Snarl enters, you may reveal a Plains or Swamp card from your hand. If you don't, Shineshadow Snarl enters tapped.
{T}: Add {W} or {B}.

{T}: Add {R}.
{R}, {T}: Target legendary creature gains first strike until end of turn.

Shipwreck Marsh enters tapped unless you control two or more other lands.
{T}: Add {U} or {B}.

{T}: Add {C}.
{1}, {T}, Sacrifice Shire Terrace: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

All creatures have "{R}: This creature gets +1/+0 until end of turn."
Whenever chaos ensues, create a 5/5 red Dragon creature token with flying.

{T}: Add {C}.
{2}{R}, {T}: Shivan Gorge deals 1 damage to each opponent.

Shivan Oasis enters tapped.
{T}: Add {R} or {G}.

{T}: Add {C}.
{T}: Add {U} or {R}. Shivan Reef deals 1 damage to you.