Flying

When Skywarp Skaab enters, you may exile two creature cards from your graveyard. If you do, draw a card.

Reach (This creature can block creatures with flying.)

: Skyway Sniper deals 1 damage to target creature with flying.

Destroy target nonblack creature.

At the beginning of your next upkeep, pay . If you don't, you lose the game.

Whenever you sacrifice a permanent, Slaughter-Priest of Mogis gets +2/+0 until end of turn.

, Sacrifice another creature or an enchantment: Slaughter-Priest of Mogis gains first strike until end of turn.

Equipped creature gets +4/+2.

Whenever equipped creature dies, if it was a Human, create a 1/1 white Spirit creature token with flying.

Equip

Tap target creature. It doesn't untap during its controller's next untap step.

Escape—, Exile three other cards from your graveyard. (You may cast this card from your graveyard for its escape cost.)

Enchant creature

When Sleep with the Fishes enters, tap enchanted creature and you create a 1/1 blue Fish creature token with "This creature can't be blocked."

Enchanted creature doesn't untap during its controller's untap step.

When Sleeper Agent enters, target opponent gains control of it.

At the beginning of your upkeep, Sleeper Agent deals 2 damage to you.

Enchant creature

Enchanted creature has fear. (It can't be blocked except by artifact creatures and/or black creatures.)

When Sleeper's Guile is put into a graveyard from the battlefield, return Sleeper's Guile to its owner's hand.

Enchant creature

When Sleeping Potion enters, tap enchanted creature.

Enchanted creature doesn't untap during its controller's untap step.

When enchanted creature becomes the target of a spell or ability, sacrifice Sleeping Potion.

When Slickshot Lockpicker enters, target instant or sorcery card in your graveyard gains flashback until end of turn. The flashback cost is equal to its mana cost. (You may cast that card from your graveyard for its flashback cost. Then exile it.)

Plot (You may pay and exile this card from your hand. Cast it as a sorcery on a later turn without paying its mana cost. Plot only as a sorcery.)

Forestwalk (This creature can't be blocked as long as defending player controls a Forest.)

Exile target creature you own, then return it to the battlefield under your control. The Ring tempts you.

Devoid (This card has no color.)

Target creature can't be blocked this turn.

Draw a card.

Hexproof (This creature can't be the target of spells or abilities your opponents control.)

Ascend (If you control ten or more permanents, you get the city's blessing for the rest of the game.)

As long as you have the city's blessing, Slippery Scoundrel has hexproof and can't be blocked.

Slipstream Serpent can't attack unless defending player controls an Island.

When you control no Islands, sacrifice Slipstream Serpent.

Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)

Trample

Whenever Slith Predator deals combat damage to a player, put a +1/+1 counter on it.

Flash

Whenever you cast another spell that has flash, you draw a card and each opponent loses 1 life.

Slivers you control have hope. (Prevent all damage that would be dealt to attacking creatures with hope.)

Jolly Gutpipes — , , Sacrifice a creature: The next creature spell you cast this turn has cascade. (When you next cast a creature spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom in a random order.)

When Slum Reaper enters, each player sacrifices a creature.

Slumbering Waterways enters the battlefield tapped.

: Add or .

Flying, vigilance, trample

Whenever Sly Spy deals combat damage to a player, you may destroy target creature facing left in its art. (Creatures without faces don't face anywhere.)

Whenever Sly Spy deals combat damage to a player, you may destroy target creature facing right in its art. (Creatures without faces don't face anywhere.)

Whenever Sly Spy deals combat damage to a player, roll a six-sided die. That player loses life equal to the result.

At the beginning of your end step, if a creature died under your control this turn, the Ring tempts you.

Whenever the Ring tempts you, target opponent reveals cards from the top of their library until they reveal a land card. Put that card onto the battlefield tapped under your control and the rest into their graveyard.

When Smelt-Ward Gatekeepers enters, if you control two or more Gates, gain control of target creature an opponent controls until end of turn. Untap that creature. It gains haste until end of turn.

For each of up to X target creatures, create a red Aura enchantment token named Smoke Blessing attached to that creature. Those tokens have enchant creature and "When enchanted creature dies, it deals 1 damage to its controller and you create a Treasure token."

Smoldering Spires enters tapped.

When Smoldering Spires enters, target creature can't block this turn.

: Add .

Flying

Whenever Smuggler's Copter attacks or blocks, you may draw a card. If you do, discard a card.

Crew 1 (Tap any number of creatures you control with total power 1 or more: This Vehicle becomes an artifact creature until end of turn.)

Whenever an opponent casts a blue or black spell, you may create a 1/1 green Snake creature token.

The player who wins this game also wins the match. (A player may concede the game at any time. If the game ends while this spell is on the stack, it never resolves.)

Cycling

Flash

When Snapcaster Mage enters, target instant or sorcery card in your graveyard gains flashback until end of turn. The flashback cost is equal to its mana cost. (You may cast that card from your graveyard for its flashback cost. Then exile it.)

Landfall — Whenever a land you control enters, Snapping Creeper gains vigilance until end of turn.

Landfall — Whenever a land you control enters, Snapping Gnarlid gets +1/+1 until end of turn.

Whenever Snapping Thragg deals combat damage to a player, you may have it deal 3 damage to target creature that player controls.

Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)

Metalcraft — Snapsail Glider has flying as long as you control three or more artifacts.

Flying

When Snaremaster Sprite enters, you may pay . When you do, tap target creature an opponent controls and put a stun counter on it. (If a permanent with a stun counter would become untapped, remove one from it instead.)

When Snooping Newsie enters, mill two cards. (Put the top two cards of your library into your graveyard.)

As long as there are five or more mana values among cards in your graveyard, Snooping Newsie gets +1/+1 and has lifelink.

: Uninstall all results from Socketed Sprocketer, then roll a six-sided die. Install the result on Socketed Sprocketer. (Put the die on this card.)

You may uninstall a result from Socketed Sprocketer to use it for a die you rolled.

Uninstall a 6 from Socketed Sprocketer: Draw a card.

Affinity for artifacts

Artifact landcycling (, Discard this card: Search your library for an artifact land card, reveal it, put it into your hand, then shuffle.)

Protection from multicolored

Whenever an opponent casts a multicolored spell, you gain 1 life.

: Add . Activate only once each turn. (While activating an ability, use rather than tapping the permanent to pay for .)

If a source you control would deal noncombat damage to an opponent or a permanent an opponent controls, it deals double that damage to that player or permanent instead.

, Discard two cards: Put an indestructible counter on Solphim, Mayhem Dominus. ( can be paid with either or 2 life.)

Protection from red

Shadow (This creature can block or be blocked by only creatures with shadow.)

Whenever a creature you control becomes blocked, it gets +1/+1 until end of turn.

: Target creature you control gains trample until end of turn. (It can deal excess combat damage to the player or planeswalker it's attacking.)

Flying

Whenever Somnophore deals damage to a player, tap target creature that player controls. That creature doesn't untap during its controller's untap step for as long as Somnophore remains on the battlefield.

Enchant creature or Vehicle

When Song of Stupefaction enters, you may mill two cards. (You may put the top two cards of your library into your graveyard.)

Fathomless descent — Enchanted permanent gets -X/-0, where X is the number of permanent cards in your graveyard.