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.)

Flying

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

Haste

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

Whenever Slith Strider becomes blocked, draw a card.

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

: Add .

Defender (This creature can't attack.)

: Slithering Shade gets +1/+1 until end of turn.

Hellbent — Slithering Shade can attack as though it didn't have defender as long as you have no cards in hand.

Flash

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

Eldrazi you control are Slivers in addition to their other types.

Slivers you control have devoid and have annihilator 1.

: Create a 1/1 colorless Eldrazi Sliver creature token. It has "Sacrifice this creature: Add ."

The "legend rule" doesn't apply to Slivers you control.

Each Sliver creature card in your graveyard has encore , where X is its mana value.

Encore (, Exile this card from your graveyard: For each opponent, create a token copy that attacks that opponent this turn if able. They gain haste. Sacrifice them at the beginning of the next end step. Activate only as a sorcery.)

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

Trample

Whenever a land card is put into your graveyard from anywhere, put a +1/+1 counter on Slogurk, the Overslime.

Remove three +1/+1 counters from Slogurk: Return it to its owner's hand.

When Slogurk leaves the battlefield, return up to three target land cards from your graveyard to your hand.

Enchant creature

At the beginning of the upkeep of enchanted creature's controller, that player sacrifices that creature unless they pay .

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

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.

, 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.)

Whenever Smart Ass attacks, choose a card name. If defending player has no cards with the chosen name in their hand, they may reveal their hand. If they don't reveal their hand, Smart Ass can't be blocked this turn.

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

Destroy target artifact.

//

Herd

Sorcery

Create three 2/2 green Elk creature tokens.

//

Saw

Sorcery

Destroy target creature. Its controller creates two 1/2 red Half creature tokens.

When Smelt-Ward Gatekeepers enters the battlefield, 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.

Whenever you cast an instant or sorcery spell, target creature an opponent controls can't block this turn.

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.)

Flying

Creatures with flying your opponents control get -1/-1.

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."

At the beginning of your upkeep, you may put a soot counter on Smokestack.

At the beginning of each player's upkeep, that player sacrifices a permanent for each soot counter on Smokestack.

Wither (This deals damage to creatures in the form of -1/-1 counters.)

When Smoldering Efreet dies, it deals 2 damage to you.

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.

, Sacrifice Snake Basket: Create X 1/1 green Snake creature tokens. Activate only as a sorcery.

Tribute 3 (As this creature enters the battlefield, an opponent of your choice may put three +1/+1 counters on it.)

When Snake of the Golden Grove enters the battlefield, if tribute wasn't paid, you gain 4 life.

Flash

When Snapcaster Mage 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.)

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.)

Target creature gets +1/+1 and gains reach until end of turn. (It can block creatures with flying.)

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.)

: You may put a creature card from your hand onto the battlefield. That creature gains haste. Sacrifice the creature at the beginning of the next end step.

Defender (This creature can't attack.)

: Snow Fortress gets +1/+0 until end of turn.

: Snow Fortress gets +0/+1 until end of turn.

: Snow Fortress deals 1 damage to target creature without flying that's attacking you.

If you control a Swamp, you may pay 4 life rather than pay this spell's mana cost.

Destroy target nonblack creature. It can't be regenerated.

Flash

Flying

As long as an opponent has eight or more cards in their graveyard, Rogues you control get +1/+0.

Whenever one or more Rogues you control attack, each opponent mills two cards.

At the beginning of combat on your turn, you may pay and sacrifice an artifact. If you do, create a 3/1 red Construct artifact creature token with haste.

Solar Blast deals 3 damage to any target.

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

When you cycle Solar Blast, you may have it deal 1 damage to any target.

, Sacrifice a black or artifact creature: Add an amount of equal to the sacrificed creature's mana value.

, : Prevent the next 2 damage that would be dealt to target creature this turn. Target opponent may draw a card.

: Choose target opponent. Regenerate Soldevi Sentry. When it regenerates this way, that player may draw a card.

, : Target player shuffles their library.

Protection from multicolored

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

Double team (When this creature attacks, conjure a duplicate into your hand, then both of them perpetually lose double team.)

Players can't get counters.

Counters can't be put on artifacts, creatures, enchantments, or lands.