Steelclad Serpent can't attack unless you control another artifact.

Equipped creature gets +2/+2.

Equip Knight

Equip

Sliver creatures you control get +0/+1.

Creatures you control get +1/+1 until end of turn.

Forecast — , Reveal Steeling Stance from your hand: Target creature gets +1/+1 until end of turn. (Activate only during your upkeep and only once each turn.)

, , Return Steelshaper Apprentice to its owner's hand: Search your library for an Equipment card, reveal that card, put it into your hand, then shuffle.

As Steely Resolve enters, choose a creature type.

Creatures of the chosen type have shroud. (They can't be the targets of spells or abilities.)

Flying, first strike

Whenever you cast your second spell each turn, exile the top card of your library. Until the end of your next turn, you may play that card.

: Copy target instant or sorcery spell you control. You may choose new targets for the copy. Activate only if you've cast three or more spells this turn.

Destroy all Plains. For each land destroyed this way, Stench of Evil deals 1 damage to that land's controller unless they pay .

As Stenn, Paranoid Partisan enters, choose a card type other than creature or land.

Spells you cast of the chosen type cost less to cast.

: Exile Stenn. Return it to the battlefield under its owner's control at the beginning of the next end step.

: Add .

, : Stensia Bloodhall deals 2 damage to target player or planeswalker.

Attacking creatures you control have first strike.

Whenever a Vampire you control deals combat damage to a player, put a +1/+1 counter on it.

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.)

Each player may shuffle their hand and graveyard into their library. Each player who does draws seven cards. Exile Step Between Worlds.

Plot (You may pay and exile this card from your hand. Cast it as a sorcery on a later turn without paying its mana cost. Plot only as a sorcery.)

Return two target creatures to their owners' hands.

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

Landfall — Whenever a land you control enters, Steppe Lynx gets +2/+2 until end of turn.

When Sterling Hound enters, surveil 2. (Look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.)

Flying

When Sterling Supplier enters, put a +1/+1 counter on another target creature you control.

Return target creature or enchantment an opponent controls to its owner's hand.

Draw two cards, then discard a card. Create a tapped Powerstone token. (It's an artifact with ": Add . This mana can't be spent to cast a nonartifact spell.")

Soulbond (You may pair this creature with another unpaired creature when either enters. They remain paired for as long as you control both of them.)

As long as Stern Mentor is paired with another creature, each of those creatures has ": Target player mills two cards."

Counter target creature spell with power or toughness 2 or less.

Target creature you control deals damage equal to its power to target creature you don't control. Create a Food token. (It's an artifact with ", , Sacrifice this artifact: You gain 3 life.")

Vigilance

: Add .

Enchant creature

Enchanted creature has menace and "Whenever this creature deals combat damage to a player, create a Treasure token." (It can't be blocked except by two or more creatures. The token is an artifact with ", Sacrifice this artifact: Add one mana of any color.")

When enchanted creature dies, draw a card.

Reach

When Stickytongue Sentinel enters, return up to one other target permanent you control to its owner's hand.

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

Whenever Stigma Lasher deals damage to a player, that player can't gain life for the rest of the game.

Protection from white and from black

: Stillmoon Cavalier gains flying until end of turn.

: Stillmoon Cavalier gains first strike until end of turn.

: Stillmoon Cavalier gets +1/+0 until end of turn.

When Stimulus Package enters, create two Treasure tokens. (They're artifacts with ", Sacrifice this artifact: Add one mana of any color.")

Sacrifice a Treasure: Create a 1/1 green and white Citizen creature token.

Flash

Flying

When Stingblade Assassin enters, destroy target creature an opponent controls that was dealt damage this turn.

Reach

When Stingerfling Spider enters, you may destroy target creature with flying.

Deathtouch

Descend 4 — Whenever Stinging Cave Crawler attacks, if there are four or more permanent cards in your graveyard, you draw a card and you lose 1 life.

, : Stinging Licid loses this ability and becomes an Aura enchantment with enchant creature. Attach it to target creature. You may pay to end this effect.

Whenever enchanted creature becomes tapped, Stinging Licid deals 2 damage to that creature's controller.

When this creature enters, target creature an opponent controls gets -1/-1 until end of turn.

You draw X cards and you lose X life, where X is the mana value of a commander you own on the battlefield or in the command zone.

Echo (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.)

When Stingscourger enters, return target creature an opponent controls to its owner's hand.

Giant spells you cast cost less to cast.

Return target creature card with mana value X or less from your graveyard to the battlefield.

Create three 2/2 black Zombie creature tokens.

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

When you cycle Stir the Sands, create a 2/2 black Zombie creature token.

Target creature you control gets +2/+2 until end of turn.

Overload (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")

Stirring Wildwood enters tapped.

: Add or .

: Until end of turn, Stirring Wildwood becomes a 3/4 green and white Elemental creature with reach. It's still a land.

Return target creature card from your graveyard to your hand.

Threshold — Return that card from your graveyard to the battlefield instead if seven or more cards are in your graveyard.

As an additional cost to cast this spell, exile a creature card from your graveyard.

Flying

, : Each player mills three cards. Exile up to two creature cards put into graveyards this way. Create an X/X blue Zombie creature token, where X is the total power of the cards exiled this way.

Equipped creature gets +3/+3.

Whenever equipped creature attacks, it doesn't untap during its controller's next untap step.

Whenever Stitcher's Graft becomes unattached from a permanent, sacrifice that permanent.

Equip

Flying

, Discard two cards: Return Stitchwing Skaab from your graveyard to the battlefield tapped.

When Stockpiling Celebrant enters, you may return another target nonland permanent you control to its owner's hand. If you do, scry 2.

When Stoic Builder enters, you may return target land card from your graveyard to your hand.

Defender (This creature can't attack.)

Flying

When Stoic Ephemera blocks, sacrifice it at end of combat.

Metalcraft — This spell costs less to cast if you control three or more artifacts.

Counter target spell.

Discard your hand, then draw two cards. (Then exile this card. You may cast the creature later from exile.)