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

: Regenerate Slith Bloodletter.

Trample

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

Slither Blade can't be blocked.

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.)

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 Sludge Monster enters or attacks, put a slime counter on up to one other target creature.

Non-Horror creatures with slime counters on them lose all abilities and have base power and toughness 2/2.

Trample

Whenever Sludge Titan enters or attacks, mill five cards. You may put a creature card and/or a land card from among them into your hand.

When Slum Reaper enters, each player sacrifices a creature.

Whenever an enchantment you control enters, scry 1.

: Slumbering Keepguard gets +1/+1 until end of turn for each enchantment you control.

, : 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 Sly Spy deals combat damage to a player, that player reveals their hand. You choose a card from it with the longest name. That player discards that card.

Whenever Sly Spy deals combat damage to a player, that player loses a finger until Sly Spy leaves the battlefield. (The finger is chosen by its owner and can't roll dice or touch cards.)

Whenever Sly Spy deals combat damage to a player, that player reveals the top card of their library. Put that card into your hand and you lose life equal to its mana value.

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.

Menace

When Smelted Chargebug enters, you get (two energy counters).

Whenever Smelted Chargebug attacks, you may pay . If you do, another target attacking creature gets +1/+0 and gains menace until end of turn.

, 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, 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.

Flying

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

: Look at target face-down creature.

: Target creature gets -3/-3 until end of turn.

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

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.

Devoid (This card has no color.)

Flying

At the beginning of your upkeep, sacrifice a creature.

Whenever you sacrifice a creature, draw a card.

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

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

Mutate (If you cast this spell for its mutate cost, put it over or under target non-Human creature you own. They mutate into the creature on top plus all abilities from under it.)

Double strike

Whenever this creature mutates, it deals 4 damage to target creature or planeswalker an opponent controls and you gain 4 life.

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, 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 you control with power 2 or less enters, 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.

Flying

When you draw your third card in a turn, return Sneaky Snacker from your graveyard to the battlefield tapped.

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.

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.

Trample

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

Flying

When Soaring Sandwing enters, you gain 3 life.

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

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.

: 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.)

Bushido 1 (Whenever this creature blocks or becomes blocked, it gets +1/+1 until end of turn.)

At the beginning of your upkeep, if a player has more cards in hand than each other player, the player who has the most cards in hand gains control of Sokenzan Renegade.