Whenever you roll a 5 or higher on a die, Steel Squirrel gets +X/+X until end of turn, where X is the result.

: Roll a six-sided die.

Steelbane Hydra enters the battlefield with X +1/+1 counters on it.

, Remove a +1/+1 counter from Steelbane Hydra: Destroy target artifact or enchantment.

Defender

Whenever an enchantment enters the battlefield under your control, Steelclad Spirit can attack this turn as though it didn't have defender.

Sliver creatures you control get +0/+1.

Flying

Whenever Steel-Plume Marshal attacks, other attacking creatures you control with flying get +2/+2 until end of turn.

: Steeple Creeper gains flying until end of turn.

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.

As Stenn, Paranoid Partisan enters the battlefield, 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.

Flying, vigilance

: Target creature with a +1/+1 counter on it gains flying and vigilance until end of turn.

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

: Each player loses 1 life for each Swamp they control.

Soulbond (You may pair this creature with another unpaired creature when either enters the battlefield. 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."

Flying

Whenever Stet, Draconic Proofreader attacks, you may exile a card from your graveyard. When you do, Stet, Draconic Proofreader deals 4 damage to any target whose name begins with the same letter as the exiled card.

: Delete the first letter of target permanent or player's name until end of turn.

Vigilance

: Add .

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.

Flash

Flying

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

Reach

When Stingerfling Spider enters the battlefield, 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 the battlefield, target creature an opponent controls gets -1/-1 until end of turn.

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 the battlefield, return target creature an opponent controls to its owner's hand.

Giant spells you cast cost less to cast.

Flying

Stirge can't block.

Blood Drain — , Pay 1 life, Sacrifice Stirge: Draw a card.

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

When Stitched Assistant exploits a creature, scry 1, then draw a card. (To scry 1, look at the top card of your library, then you may put that card on the bottom of your library.)

Stitched Mangler enters the battlefield tapped.

When Stitched Mangler enters the battlefield, tap target creature an opponent controls. That creature doesn't untap during its controller's next untap step.

, : Create a 2/2 blue Homunculus creature token, then sacrifice a creature.

Flying

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

Flying, vigilance

Players can't untap more than one creature during their untap steps.

Whenever a player cycles a card, Stoic Champion gets +2/+2 until end of turn.

When Stoic Farmer enters the battlefield, search your library for a basic Plains card and reveal it. If an opponent controls more lands than you, put it onto the battlefield tapped. Otherwise, put it into your hand. Then shuffle.

Foretell (During your turn, you may pay and exile this card from your hand face down. Cast it on a later turn for its foretell cost.)

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

Damage can't be prevented this turn. Stomp deals 2 damage to any target.

: Destroy target tapped nonblack creature. Activate only during your turn, before attackers are declared.

Equipped creatures you control get +1/+1.

Whenever an equipped creature you control dies, draw a card.

: Stone Kavu gets +1/+0 until end of turn.

: Stone Kavu gets +0/+1 until end of turn.

Stone Spirit can't be blocked by creatures with flying.

Whenever one or more cards leave your graveyard, scry 1.

Flash

Flying

When Stonecloaker enters the battlefield, return a creature you control to its owner's hand.

When Stonecloaker enters the battlefield, exile target card from a graveyard.

Whenever Stone-Cold Basilisk blocks or becomes blocked by a creature with fewer letters in its name, destroy that creature at end of combat. (Punctuation and spaces aren't letters.)

Whenever an opponent reads Stone-Cold Basilisk, that player is turned to stone until end of turn. Stoned players can't attack, block, cast spells, or activate abilities.

Cohort — , Tap an untapped Ally you control: Look at the top four cards of your library. You may reveal an Equipment card from among them and put it into your hand. Put the rest on the bottom of your library in any order.

Vigilance

, : Search your library for an Equipment card, put it onto the battlefield, attach it to a creature you control, then shuffle.

: Stonehorn Chanter gains vigilance and lifelink until end of turn. (Attacking doesn't cause it to tap. Damage dealt by it also causes you to gain that much life.)

Flying

, Exile a card from your graveyard: Target creature gains flying until end of turn.

At the beginning of each player's end step, that player sacrifices an untapped land.

First strike

Flying

: Stonewood Invoker gets +5/+5 until end of turn.