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

Choose one —

• Destroy target artifact.

• Target creature gets +3/+2 and gains trample until end of turn.

Draw two cards, then discard a card.

If you've cast a spell named Peer Through Depths and a spell named Reach Through Mists this turn, you may search your library for a card named The Unspeakable, put it onto the battlefield, then shuffle.

You may cast Aura and Equipment spells as though they had flash.

Whenever an Equipment enters the battlefield under your control, you may attach it to target creature you control.

Flying

When Sigardian Savior enters the battlefield, if you cast it, return up to two target creature cards with mana value 2 or less from your graveyard to the battlefield.

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

: Sighted-Caste Sorcerer gains shroud until end of turn. (It can't be the target of spells or abilities.)

Whenever you cast an enchantment spell, create a 4/4 white Angel creature token with flying.

Deathtouch

Whenever Silas Renn, Seeker Adept deals combat damage to a player, choose target artifact card in your graveyard. You may cast that card this turn.

Partner (You can have two commanders if both have partner.)

Your opponents can't cast spells this turn.

Return target creature to its owner's hand.

Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Ninjutsu (, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.)

Whenever Silent-Blade Oni deals combat damage to a player, look at that player's hand. You may cast a spell from among those cards without paying its mana cost.

Flash (You may cast this spell any time you could cast an instant.)

Flying

Exploit (When this creature enters the battlefield, you may sacrifice a creature.)

When Silumgar Sorcerer exploits a creature, counter target creature spell.

As an additional cost to cast this spell, you may reveal a Dragon card from your hand.

Counter target spell unless its controller pays . If you revealed a Dragon card or controlled a Dragon as you cast this spell, counter that spell instead.

Whenever you cast a creature spell, choose one —

• Destroy target artifact or enchantment.

• Look at the top five cards of your library. You may put a land card from among them onto the battlefield tapped. Put the rest on the bottom of your library in a random order.

• You gain 4 life.

Whenever Silverpelt Werewolf deals combat damage to a player, draw a card.

At the beginning of each upkeep, if a player cast two or more spells last turn, transform Silverpelt Werewolf.

Creature spells you cast have demonstrate. (Whenever you cast a creature spell, you may copy it. If you do, choose an opponent to also copy it. Each copy becomes a token.)

As Silverquill Silencer enters the battlefield, choose a nonland card name.

Whenever an opponent casts a spell with the chosen name, they lose 3 life and you draw a card.

Each nonland card in your hand without foretell has foretell. Its foretell cost is equal to its mana cost reduced by . (During your turn, you may pay and exile it from your hand face down. Cast it on a later turn for its foretell cost.)

Whenever chaos ensues, you may cast a foretold card you own from exile without paying its mana cost this turn.

When Sinister Concierge dies, you may exile it and put three time counters on it. If you do, exile up to one target creature and put three time counters on it. Each card exiled this way that doesn't have suspend gains suspend. (For each card with suspend, its owner removes a time counter from it at the beginning of their upkeep. When the last is removed, they may cast it without paying its mana cost. Those creature spells have haste.)

Look at the top two cards of target opponent's library. Exile one of them face down and put the other on the bottom of that library. You may play the exiled card for as long as it remains exiled, and you may spend mana as though it were mana of any color to cast that spell.

Flashback

Raid — This spell costs less to cast if you attacked this turn.

Flying

Martyrdom — When Sister Repentia dies, you gain 2 life and draw two cards.

Miracle (You may cast this card for its miracle cost when you draw it if it's the first card you drew this turn.)

If an opponent controls a Mountain and you control a Plains, you may cast this spell without paying its mana cost.

Prevent all damage that would be dealt this turn to creatures you control.

As an additional cost to cast this spell, exile two creature cards from your graveyard.

Trample

As an additional cost to cast this spell, exile X cards from your graveyard.

You draw X cards and you lose X life.

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

When Skinthinner is turned face up, destroy target nonblack creature. It can't be regenerated.

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

When Skirk Marauder is turned face up, it deals 2 damage to any target.

Multikicker (You may pay an additional any number of times as you cast this spell.)

Haste

Skitter of Lizards enters the battlefield with a +1/+1 counter on it for each time it was kicked.

Flash

You may cast colorless spells as though they had flash.

Whenever you cast a colorless spell, until end of turn, Skittering Cicada gains trample and gets +X/+X, where X is that spell's mana value.

When you cast a creature spell, sacrifice Skittering Monstrosity.

At the beginning of your upkeep, flip a coin. If you lose the flip, turn Skittish Valesk face down.

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

As long as it's your turn, Skophos Reaver gets +2/+0.

Madness (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

Target opponent discards two cards. If fewer than two cards were discarded this way, you draw cards equal to the difference.

Foretell (During your turn, you may pay and exile this card from your hand face down. Cast it on a later turn for its foretell cost.)

Whenever you cast a Spirit or Arcane spell, you may put a ki counter on Skullmane Baku.

, , Remove X ki counters from Skullmane Baku: Target creature gets -X/-X until end of turn.

Flying

When Sky Hussar enters the battlefield, untap all creatures you control.

Forecast — Tap two untapped white and/or blue creatures you control, Reveal Sky Hussar from your hand: Draw a card. (Activate only during your upkeep and only once each turn.)

Flying

Whenever you cast a noncreature spell, Sky Theater Strix gets +1/+0 until end of turn.

This spell costs less to cast for each enchantment you control.

Flying

Kicker (You may pay an additional as you cast this spell.)

Flying, defender

If Skyclave Sentinel was kicked, it enters the battlefield with two +1/+1 counters on it.

As long as Skyclave Sentinel has a +1/+1 counter on it, it can attack as though it didn't have defender.

Flying

Whenever you cast a Spirit or Arcane spell, you may gain control of target creature with that spell's mana value until end of turn.

Flash (You may cast this spell any time you could cast an instant.)

Flying

Flying

Converge — Skyrider Elf enters the battlefield with a +1/+1 counter on it for each color of mana spent to cast it.

Cast this spell only if you've cast another spell this turn.

Flying

Whenever you cast a noncreature spell, you may pay . If you do, create a 2/2 blue Djinn Monk creature token with flying.

Whenever Slagstone Refinery or another nontoken artifact you control is put into a graveyard from the battlefield or is put into exile from the battlefield, create a tapped Powerstone token. (It's an artifact with ": Add . This mana can't be spent to cast a nonartifact spell.")

Slaying Fire deals 3 damage to any target.

Adamant — If at least three red mana was spent to cast this spell, it deals 4 damage instead.

More Than Meets the Eye (You may cast this card converted for .)

Double strike, haste

At the beginning of each opponent's upkeep, you may have that player gain control of Slicer until end of turn. If you do, untap Slicer, goad it, and it can't be sacrificed this turn. If you don't, convert it.

When Slickshot Lockpicker enters the battlefield, 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.)

Kicker (You may pay an additional as you cast this spell.)

When Slinn Voda, the Rising Deep enters the battlefield, if it was kicked, return all creatures to their owners' hands except for Merfolk, Krakens, Leviathans, Octopuses, and Serpents.

When Slithermuse leaves the battlefield, choose an opponent. If that player has more cards in hand than you, draw cards equal to the difference.

Evoke (You may cast this spell for its evoke cost. If you do, it's sacrificed when it enters the battlefield.)

: Add .

: Add one mana of any color. Spend this mana only to cast a Sliver spell.

, : Create a 1/1 colorless Sliver creature token. Activate only if you control a Sliver.