Trample

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

Slither Blade can't be blocked.

Scavenge (, Exile this card from your graveyard: Put a number of +1/+1 counters equal to this card's power on target creature. Scavenge only as a sorcery.)

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.)

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

When Slithery Stalker enters the battlefield, exile target green or white creature an opponent controls.

When Slithery Stalker leaves the battlefield, return the exiled card to the battlefield under its owner's control.

: 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.

All Sliver creatures get +1/+1 for each other Sliver on the battlefield.

: Create a 1/1 colorless Sliver creature token.

Slivers you control have flying and "Whenever you draw a card, this creature deals 1 damage to any target" and ": Draw a card."

, Sacrifice an artifact: Add an amount of equal to the sacrificed artifact's mana value. Spend this mana only to cast artifact spells or activate abilities of artifacts.

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.)

Whenever another artifact you control enters or leaves the battlefield, you may pay . If you do, target player loses 1 life and you gain 1 life.

Enchant creature

Enchanted creature can't block.

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

Flying

Slumbering Dragon can't attack or block unless it has five or more +1/+1 counters on it.

Whenever a creature attacks you or a planeswalker you control, put a +1/+1 counter on Slumbering Dragon.

, Discard a Spirit or Arcane card: Slumbering Tora becomes an X/X Cat artifact creature until end of turn, where X is the discarded card's mana value.

, : Until your next turn, target creature an opponent controls can't be blocked. Goad that creature. (Until your next turn, that creature attacks each combat if able and attacks a player other than you if able.)

Destroy target artifact. Smash to Smithereens deals 3 damage to that artifact's controller.

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.

, Sacrifice Smelt-Ward Ignus: Gain control of target creature with power 3 or less until end of turn. Untap that creature. It gains haste until end of turn. Activate only as a sorcery.

Flash

Flying

When Smirking Spelljacker enters the battlefield, exile target spell an opponent controls.

Whenever Smirking Spelljacker attacks, if a card is exiled with it, you may cast the exiled card without paying its mana cost.

Smite the Deathless deals 3 damage to target creature. That creature loses indestructible until end of turn. If that creature would die this turn, exile it instead.

Smiting Helix deals 3 damage to any target and you gain 3 life.

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

Whenever Smogsteed Rider attacks, each other attacking creature gains fear until end of turn. (They can't be blocked except by artifact creatures and/or black creatures.)

: Add two mana in any combination of colors. Spend this mana only to cast Elemental spells or activate abilities of Elementals.

Whenever a player casts a black spell, you may pay . If you do, target player loses 1 life.

Smoldering Crater enters the battlefield tapped.

: Add .

Cycling (, Discard this card: Draw a card.)

Defender

Whenever you cast an instant or sorcery spell, put a number of ember counters on Smoldering Egg equal to the amount of mana spent to cast that spell. Then if Smoldering Egg has seven or more ember counters on it, remove them and transform Smoldering Egg.

Smoldering Spires enters the battlefield tapped.

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

: Add .

At the beginning of your upkeep, target player loses 1 life.

Sacrifice Smoldering Tar: It deals 4 damage to target creature. Activate only as a sorcery.

Devoid (This card has no color.)

Flying

At the beginning of your upkeep, sacrifice a creature.

Whenever you sacrifice a creature, draw a card.

Draft Smuggler Captain face up.

As you draft a card, you may reveal it, note its name, then turn Smuggler Captain face down.

When Smuggler Captain enters the battlefield, you may search your library for a card with a name you noted for cards named Smuggler Captain, reveal it, put it into your hand, then shuffle.

Enchant creature

Enchanted creature has poisonous 3. (Whenever it deals combat damage to a player, that player gets three poison counters. A player with ten or more poison counters loses the game.)

Put a +1/+1 counter on target creature you control. It gains hexproof until end of turn. (It can't be the target of spells or abilities your opponents control.)

Flying (This creature can't be blocked except by creatures with flying or reach.)

Flash

Enrage — Whenever Snapping Sailback is dealt damage, put a +1/+1 counter on it. (It must survive the damage to get the counter.)

Devoid (This card has no color.)

: Add .

, : Draw a card.

Whenever you cycle a card, tap target creature an opponent controls.

Flying

When Snaremaster Sprite enters the battlefield, 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.)

Menace

Whenever another creature with power 2 or less enters the battlefield under your control, surveil 1. (Look at the top card of your library. You may put it into your graveyard.)

Menace (This creature can't be blocked except by two or more creatures.)

As long as you control a Goblin or Orc, Snarling Warg gets +1/+0.

, : Target creature with power 2 or less can't be blocked this turn.

When Snooping Newsie enters the battlefield, 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.

Enchant creature

Enchanted creature has flying.

Enchanted creature has first strike as long as it's blocking and you control a snow land.

Conjure a duplicate of each of X target nontoken permanents into your hand. Those cards perpetually gain "You may spend mana as though it were mana of any color to cast this spell." If X is 5 or more, you may put one of them from your hand onto the battlefield.

(: Add or .)

Snowfield Sinkhole enters the battlefield tapped.

Enchant creature

When So Shiny enters the battlefield, if you control a token, tap enchanted creature, then scry 2.

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

Flying

Flying

When Soaring Sandwing enters the battlefield, you gain 3 life.

Plainscycling (, Discard this card: Search your library for a Plains card, reveal it, put it into your hand, then shuffle.)