msem-instigator

Exile all nontoken creatures. For each creature exiled this way, return that card to the battlefield under a random player's control.

{T}: Add {C}.
{T}, Sacrifice Shifting Canyon: Choose a basic land type other than Plains. Create a colorless land token that's a Plains and the chosen basic land type. Activate only during your upkeep.

{T}: Add {C}.
{T}, Sacrifice Shifting Cascade: Choose a basic land type other than Island. Create a colorless land token that's an Island and the chosen basic land type. Activate only during your upkeep.

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

{T}: Add {C}.
{T}, Sacrifice Shifting Crag: Choose a basic land type other than Mountain. Create a colorless land token that's a Mountain and the chosen basic land type. Activate only during your upkeep.

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

{T}: Add {C}.
{T}, Sacrifice Shifting Grove: Choose a basic land type other than Forest. Create a colorless land token that's a Forest and the chosen basic land type. Activate only during your upkeep.

{T}: Add {C}.
{T}, Sacrifice Shifting Morass: Choose a basic land type other than Swamp. Create a colorless land token that's a Swamp and the chosen basic land type. Activate only during your upkeep.

Search your library for a Desert card or a land card with a basic land type and put it onto the battlefield tapped, then shuffle.

When Shifty Squirrel enters, you gain 3 life.
Sacrifice a creature: Transform Shifty Squirrel.

{T}: Add {C}.
Discard Shikai's Redoubt: Exile up to two target cards from graveyards.

Equipped creature has haste.
At the beginning of combat on your turn, create a token that's a copy of equipped creature, except the token isn't legendary if equipped creature is legendary. That token gains haste. Exile it at the beginning of the next end step.
Equip {2}

Flying, haste
Whenever Shimmering Dragon attacks, for each creature you control, create a tapped and attacking token that's a copy of that creature. Exile the tokens at the beginning of the end step.

Whenever equipped creature attacks, put a charge counter on Shimmersting, then create a token that's a copy of equipped creature and that's tapped and attacking for each charge counter on Shimmersting, except the tokens aren't legendary. Exile the tokens at the beginning of the end step.
Equip {5}

As an additional cost to cast this spell, discard a card.
Choose two. You may choose the same mode more than once.
• Draw a card.
• Return target card with a cycling ability from your graveyard to your hand.

Shining Crusader has protection from all colors as long as you control no colored permanents.

Shining Showstopper deals 5 damage to any target. Audition for red. (Create a 1/1 Construct Actor creature token, a Warrior Role giving 3/2 and trample, or a Wizard Role giving 2/2 and prowess. Roles replace older ones.)

Flash
If one or more counters would be put on a creature you control, put that many plus one of each of those kinds of counters on that creature instead.

{T}: Add one mana of any color. Activate only if Shinrin Sage is enchanted, equipped, or has a card inscribed onto it.

When Shizen, the Thousand Steps enters, draw a card, then choose a creature card name.
Creatures you control with the chosen name get +0/+1 and have hexproof.

Shock deals 2 damage to any target.

Equipped creature gets +2/+0.
Equipped creature has first strike as long as it's attacking.
Equip {2}

Shock Blast deals X damage to target creature, where X is the number of instant and sorcery cards in your graveyard.

Shock and Awe deals 2 damage to target creature. Creatures can't block this turn.

Vanguard — Whenever a creature you control attacks alone, Shocking Ewe deals 2 damage to defending player.