Whenever Silkenfist Fighter becomes blocked, untap it.

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.

Partner with Trynn, Champion of Freedom (When this creature enters, target player may put Trynn into their hand from their library, then shuffle.)

Menace

Sacrifice a Human: Put a +1/+1 counter on Silvar, Devourer of the Free. It gains indestructible until end of turn.

Flying

Threshold — Other creatures you control get +2/+2 as long as seven or more cards are in your graveyard.

Trample

When Silverback Shaman dies, draw a card.

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

Sima Yi, Wei Field Marshal's power is equal to the number of Swamps you control.

Simic Growth Chamber enters tapped.

When Simic Growth Chamber enters, return a land you control to its owner's hand.

: Add .

At the beginning of combat on your turn, each opponent loses 1 life and you gain 1 life.

, Pay 2 life, Sacrifice Sinister Monolith: Draw two cards. Activate only as a sorcery.

Enchant creature

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

Until end of turn, you may cast target instant or sorcery card from your graveyard without paying its mana cost. If that spell would be put into your graveyard, exile it instead. Exile Sins of the Past.

When Siona, Captain of the Pyleas enters, look at the top seven cards of your library. You may reveal an Aura card from among them and put it into your hand. Put the rest on the bottom of your library in a random order.

Whenever an Aura you control becomes attached to a creature you control, create a 1/1 white Human Soldier creature token.

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

Flying

Whenever you cast a Spirit or Arcane spell, you may draw a card.

Flying

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

Medicus Ministorum — When Sister Hospitaller enters, return target creature card from your graveyard to the battlefield. You gain life equal to its mana value.

: Target creature blocks Sisters of Stone Death this turn if able.

: Exile target creature blocking or blocked by Sisters of Stone Death.

: Put a creature card exiled with Sisters of Stone Death onto the battlefield under your control.

, 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.)

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

Trample

Trample

Bloodrush — , Discard Skarrg Goliath: Target attacking creature gets +9/+9 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.

Flying

, Sacrifice a creature: Regenerate Skeletal Kathari.

, or , : Return target artifact creature card from your graveyard to your hand.

Skemfar Elderhall enters tapped.

: Add .

, , Sacrifice Skemfar Elderhall: Up to one target creature you don't control gets -2/-2 until end of turn. Create two 1/1 green Elf Warrior creature tokens. Activate only as a sorcery.

Spectacle (You may cast this spell for its spectacle cost rather than its mana cost if an opponent lost life this turn.)

Skewer the Critics deals 3 damage to any target.

: Choose one. Activate only once each turn.

• Until end of turn, Skinshifter becomes a Rhino with base power and toughness 4/4 and gains trample.

• Until end of turn, Skinshifter becomes a Bird with base power and toughness 2/2 and gains flying.

• Until end of turn, Skinshifter becomes a Plant with base power and toughness 0/8.

Protection from red

Tap five untapped Goblins you control: Skirk Fire Marshal deals 10 damage to each creature and each player.

Skirk Shaman can't be blocked except by artifact creatures and/or red creatures.

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.

When you cast a creature spell, sacrifice Skittering Horror.

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.)

During 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.)

Deathtouch

Hyperphase Threshers — Whenever an artifact you control enters, Skorpekh Destroyer gains first strike until end of turn.

At the beginning of your upkeep, you lose 1 life and create a 1/1 colorless Phyrexian Mite artifact creature token with toxic 1 and "This creature can't block."

Corrupted — As long as an opponent has three or more poison counters, creatures you control with toxic have lifelink.

Flanking (Whenever a creature without flanking blocks this creature, the blocking creature gets -1/-1 until end of turn.)

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

Haste

Whenever Skullbriar, the Walking Grave deals combat damage to a player, put a +1/+1 counter on it.

Counters remain on Skullbriar as it moves to any zone other than a player's hand or library.

When Skullport Merchant enters, create a Treasure token. (It's an artifact with ", Sacrifice this artifact: Add one mana of any color.")

, Sacrifice another creature or a Treasure: Draw a card.

When Skullslither Worm enters, each opponent discards a card. For each opponent who can't, put two +1/+1 counters on Skullslither Worm.

Flying

When Sky Hussar enters, 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.

Kicker

Skyclave Shade can't block.

If Skyclave Shade was kicked, it enters with two +1/+1 counters on it.

Landfall — Whenever a land you control enters, if Skyclave Shade is in your graveyard and it's your turn, you may cast it from your graveyard this turn.

Whenever Skyclaw Thrash attacks, flip a coin. If you win the flip, Skyclaw Thrash gets +1/+1 and gains flying until end of turn.

Flying, haste

When you cast your commander, return Skyfire Phoenix from your graveyard to the battlefield.

As long as Skyhunter Cub is equipped, it gets +1/+1 and has flying.

Flying, vigilance (This creature can't be blocked except by creatures with flying or reach, and attacking doesn't cause this creature to tap.)

Flying

Melee (Whenever this creature attacks, it gets +1/+1 until end of turn for each opponent you attacked this combat.)

Lieutenant — As long as you control your commander, other creatures you control have melee.

Flying

Whenever Skyknight Vanguard attacks, create a 1/1 white Soldier creature token that's tapped and attacking.

Flying

When Skymarch Bloodletter enters, target opponent loses 1 life and you gain 1 life.

Sunburst (This enters with a +1/+1 counter on it for each color of mana spent to cast it.)

Flying

Sacrifice Skyshaper: Creatures you control gain flying until end of turn.