Flying

, Sacrifice Silkwing Scout: Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.

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

When Silumgar Butcher exploits a creature, target creature gets -3/-3 until end of turn.

Flying

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

Whenever another creature you control dies, put a +1/+1 counter on Silumgar Scavenger. It gains haste until end of turn if it exploited that creature.

Megamorph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its megamorph cost and put a +1/+1 counter on it.)

When Silumgar Spell-Eater is turned face up, counter target spell unless its controller pays .

Choose two —

• Counter target noncreature spell.

• Return target permanent to its owner's hand.

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

• Destroy target planeswalker.

First strike, protection from red

Silverbluff Bridge enters tapped.

Indestructible

: Add or .

As an additional cost to cast this spell, reveal a Merfolk card from your hand or pay .

When Silvergill Adept enters, draw a card.

When Silverglade Elemental enters, you may search your library for a Forest card, put that card onto the battlefield, then shuffle.

Equipped creature gets +2/+0.

As long as equipped creature is a Human, it gets an additional +1/+0.

Equip

At the beginning of your end step, if you gained 3 or more life this turn, return Silversmote Ghoul from your graveyard to the battlefield tapped.

, Sacrifice Silversmote Ghoul: Draw a card.

Trample

: Regenerate Silvos, Rogue Elemental.

Equipped creature gets +1/+1.

Whenever Simian Sling or equipped creature becomes blocked, it deals 1 damage to defending player.

Reconfigure (: Attach to target creature you control; or unattach from a creature. Reconfigure only as a sorcery. While attached, this isn't a creature.)

Evolve (Whenever a creature you control enters, if that creature has greater power or toughness than this creature, put a +1/+1 counter on this creature.)

, : Move a +1/+1 counter from Simic Fluxmage onto target creature.

Simic Guildgate enters tapped.

: Add or .

: Untap Simic Ragworm.

Singe deals 1 damage to target creature. That creature becomes black until end of turn.

Flash

When Singer of Swift Rivers enters, put a shield counter on another target creature you control. (If it would be dealt damage or destroyed, remove a shield counter from it instead.)

You may cast Merfolk spells as though they had flash.

: Target attacking creature has base power 0 until end of 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.)

Enchant creature

Enchanted creature gets +3/+1 and is black.

Enchant player

At the beginning of your upkeep, put a judgment counter on Sinner's Judgment. Then if there are three or more judgment counters on it, enchanted player loses the game.

If Sinner's Judgment would be put into a graveyard from anywhere, exile it instead.

Devoid (This card has no color.)

Whenever a land an opponent controls enters, that player exiles the top two cards of their library and you draw two cards.

Flying

Inspired — Whenever Siren of the Silent Song becomes untapped, each opponent discards a card, then each opponent mills a card.

Sisay, Weatherlight Captain gets +1/+1 for each color among other legendary permanents you control.

: Search your library for a legendary permanent card with mana value less than Sisay's power, put that card onto the battlefield, then shuffle.

: Add .

, Sacrifice another creature or an artifact: For each opponent, you mill a card, then return that card from your graveyard to your hand unless that player pays 3 life. (To mill a card, put the top card of your library into your graveyard.)

Choose a Background (You can have a Background as a second commander.)

Alliance — Whenever another creature you control enters, target creature an opponent controls can't block this turn. If this is the second time this ability has resolved this turn, that creature attacks during its controller's next combat phase if able.

Tap three untapped creatures you control: Tap target creature.

Trample

Bloodrush — , Discard Skarrg Goliath: Target attacking creature gets +9/+9 and gains trample until end of turn.

: Add .

, : Target creature gets +1/+1 and gains trample until end of turn.

Riot (This creature enters with your choice of a +1/+1 counter or haste.)

Flying

: Skarrgan Hellkite deals 2 damage divided as you choose among one or two targets. Activate only if Skarrgan Hellkite has a +1/+1 counter on it.

Bloodthirst 3 (If an opponent was dealt damage this turn, this creature enters with three +1/+1 counters on it.)

, Sacrifice Skarrgan Skybreaker: It deals damage equal to its power to any target.

Changeling (This card is every creature type.)

: Regenerate Skeletal Changeling.

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

You draw X cards and you lose X life.

Skeleton Scavengers enters with a +1/+1 counter on it.

Pay for each +1/+1 counter on Skeleton Scavengers: Regenerate Skeleton Scavengers. When it regenerates this way, put a +1/+1 counter on it.

When Skemfar Shadowsage enters, choose one —

• Each opponent loses X life, where X is the greatest number of creatures you control that have a creature type in common.

• You gain X life, where X is the greatest number of creatures you control that have a creature type in common.

Target creature gets +2/+0 and gains first strike until end of turn.

Living weapon (When this Equipment enters, create a 0/0 black Phyrexian Germ creature token, then attach this to it.)

Equipped creature gets +2/+2 and has flying.

Equip

Whenever Skirk Drill Sergeant or another Goblin dies, you may pay . If you do, reveal the top card of your library. If it's a Goblin permanent card, put it onto the battlefield. Otherwise, put it into your graveyard.

, , Sacrifice a creature: Skirsdag Cultist deals 2 damage to any target.

Morbid — , Tap two untapped creatures you control: Create a 5/5 black Demon creature token with flying. Activate only if a creature died this turn.

Flying

Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)

: Skithiryx, the Blight Dragon gains haste until end of turn.

: Regenerate Skithiryx.

: Monstrosity 4. (If this creature isn't monstrous, put four +1/+1 counters on it and it becomes monstrous.)

As long as Skittering Crustacean is monstrous, it has hexproof. (It can't be the target of spells or abilities your opponents control.)

When you cast a creature spell, sacrifice Skittering Horror.

When you cast a creature spell, sacrifice Skittering Monstrosity.

Flying

When you cast a creature spell, sacrifice Skittering Skirge.

Haste

Echo—Sacrifice two lands. (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)

Whenever a land card is put into your graveyard from anywhere, you gain 1 life.

: Mill a card. (Put the top card of your library into your graveyard.)

When Skulking Fugitive becomes the target of a spell or ability, sacrifice it.