Flash

You may have Stunt Double enter as a copy of any creature on the battlefield.

Enchant creature

When Stupefying Touch enters, draw a card.

Enchanted creature's activated abilities can't be activated.

Sturdy Hatchling enters with four -1/-1 counters on it.

: Sturdy Hatchling gains shroud until end of turn. (It can't be the target of spells or abilities.)

Whenever you cast a green spell, remove a -1/-1 counter from Sturdy Hatchling.

Whenever you cast a blue spell, remove a -1/-1 counter from Sturdy Hatchling.

Counter target spell unless its controller pays . Scry 1. (Look at the top card of your library. You may put that card on the bottom.)

Prevent all combat damage that would be dealt by target creature this turn. That creature gets +0/+X until end of turn, where X is its mana value.

Gain control of each noncommander creature with mana value 3 or less.

Flying

Exalted (Whenever a creature you control attacks alone, that creature gets +1/+1 until end of turn.)

Other creatures you control have exalted. (If a creature has multiple instances of exalted, each triggers separately.)

Undaunted (This spell costs less to cast for each opponent.)

Destroy all creatures.

Submerged Boneyard enters tapped.

: Add or .

Whenever Subterranean Schooner attacks, target creature that crewed it this turn explores. (Reveal the top card of your library. Put that card into your hand if it's a land. Otherwise, put a +1/+1 counter on that creature, then put the card back or put it into your graveyard.)

Crew 1

Echo (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)

When Subterranean Shambler enters or leaves the battlefield, it deals 1 damage to each creature without flying.

Subterranean Tremors deals X damage to each creature without flying. If X is 4 or more, destroy all artifacts. If X is 8 or more, create an 8/8 red Lizard creature token.

Flash

Flying

When Subtlety enters, choose up to one target creature spell or planeswalker spell. Its owner puts it on the top or bottom of their library.

Evoke—Exile a blue card from your hand.

, Pay 2 life: Choose one. Activate only once.

• Subversive Acolyte becomes a Human Cleric. It gets +1/+2 and gains lifelink.

• Subversive Acolyte becomes a Phyrexian. It gets +3/+3 and gains trample and "Whenever this creature is dealt damage, sacrifice that many permanents."

You draw two cards and you lose 2 life.

When Su-Chi dies, add .

Target creature gets +2/+0 and gains first strike until end of turn.

Create a Treasure token. (It's an artifact with ", Sacrifice this artifact: Add one mana of any color.")

Choose a color. Sudden Demise deals X damage to each creature of the chosen color.

Split second (As long as this spell is on the stack, players can't cast spells or activate abilities that aren't mana abilities.)

Target player sacrifices a creature.

Draw a card for each different mana value among nonland cards in your graveyard.

Choose up to three target permanent cards in graveyards that were put there from the battlefield this turn. Return them to the battlefield tapped under their owners' control. You draw a card for each opponent who controls one or more of those permanents.

Split second (As long as this spell is on the stack, players can't cast spells or activate abilities that aren't mana abilities.)

Sudden Shock deals 2 damage to any target.

Split second (As long as this spell is on the stack, players can't cast spells or activate abilities that aren't mana abilities.)

Until end of turn, creatures target player controls lose all abilities and have base power and toughness 0/2.

Target creature gets +3/+3 until end of turn.

Draw a card.

Exile X target cards from target player's graveyard. For each card exiled this way, that player loses 1 life and you gain 1 life.

Counter target spell and Suffocating Blast deals 3 damage to target creature.

Cast this spell only if you were dealt damage this turn by a red instant or sorcery spell.

Suffocation deals 4 damage to the controller of the last red instant or sorcery spell that dealt damage to you this turn.

Draw a card at the beginning of the next turn's upkeep.

Target creature gets +3/+0 until end of turn.

Draw a card.

Until end of turn, target creature or Vehicle becomes an artifact creature with base power and toughness 4/5.

Draw a card.

When Suleiman's Legacy enters, destroy all Djinns and Efreets. They can't be regenerated.

Whenever a Djinn or Efreet enters, destroy it. It can't be regenerated.

Sulfur Falls enters tapped unless you control an Island or a Mountain.

: Add or .

If a red spell would deal damage to a permanent or player, it deals that much damage plus 1 to that permanent or player instead.

Sulfurous Blast deals 2 damage to each creature and each player. If you cast this spell during your main phase, Sulfurous Blast deals 3 damage to each creature and each player instead.

: Add .

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

: Add , , or .

, , Sacrifice Sultai Banner: Draw a card.

When Sultai Emissary dies, manifest the top card of your library. (Put that card onto the battlefield face down as a 2/2 creature. Turn it face up any time for its mana cost if it's a creature card.)

Enchant creature

Enchanted creature gets +2/+2.

Enchanted creature has deathtouch as long as you control a green or blue permanent. (Any amount of damage it deals to a creature is enough to destroy it.)

When Sultai Skullkeeper enters, mill two cards.

Sumala Rumblers's power is equal to the number of creatures you control.

Myriad (Whenever this creature attacks, for each opponent other than defending player, you may create a token copy that's tapped and attacking that player or a planeswalker they control. Exile the tokens at end of combat.)

When Sumala Woodshaper enters, look at the top four cards of your library. You may reveal a creature or enchantment card from among them and put it into your hand. Put the rest on the bottom of your library in a random order.

Summary Judgment deals 3 damage to target tapped creature.

Addendum — If you cast this spell during your main phase, it deals 5 damage instead.

As long as you control a Mountain, Summit Apes has menace. (It can't be blocked except by two or more creatures.)

Open a sealed Magic booster pack, reveal the cards, and put all creature cards revealed this way onto the battlefield under your control. They're Zombies in addition to their other types. (Remove those cards from your deck before beginning a new game.)

You may mill three cards. Then return a creature card from your graveyard to the battlefield. (To mill a card, put the top card of your library into your graveyard.)

Imprint — When Summoner's Egg enters, you may exile a card from your hand face down.

When Summoner's Egg dies, turn the exiled card face up. If it's a creature card, put it onto the battlefield under your control.

: Create a 2/2 colorless Pincher creature token.

Whenever an artifact is put into a graveyard from the battlefield, you may untap Summoning Station.

Amass Orcs X. Mill X cards. You may cast an instant or sorcery spell with mana value X or less from among them without paying its mana cost. (To amass Orcs X, put X +1/+1 counters on an Army you control. It's also an Orc. If you don't control an Army, create a 0/0 black Orc Army creature token first.)

Flashback—, Exile X cards from your graveyard.

Enchant creature

Enchanted creature gets +1/+3.

: Return enchanted creature to its owner's hand.

Creatures you control have horsemanship. (They can't be blocked except by creatures with horsemanship.)

Vigilance

Whenever Sun Titan enters or attacks, you may return target permanent card with mana value 3 or less from your graveyard to the battlefield.