Defender

When Stirring Bard enters the battlefield, you take the initiative.

Mantle of Inspiration — : Target creature gains menace and haste until end of turn.

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

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

Counter target spell.

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

Reveal the top seven cards of your library, then put those cards on the bottom of your library in any order. If a card named Stomping Slabs was revealed this way, Stomping Slabs deals 7 damage to any target.

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

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.

Whenever Stone-Tongue Basilisk deals combat damage to a creature, destroy that creature at end of combat.

Threshold — As long as seven or more cards are in your graveyard, all creatures able to block Stone-Tongue Basilisk do so.

, : You may tap or untap target creature.

Whenever Stonybrook Schoolmaster becomes tapped, you may create a 1/1 blue Merfolk Wizard creature token.

, Discard a card at random: Stormbind deals 2 damage to any target.

Flying

Stormbound Geist can block only creatures with flying.

Undying (When this creature dies, if it had no +1/+1 counters on it, return it to the battlefield under its owner's control with a +1/+1 counter on it.)

Sacrifice Stormcaller's Boon: Creatures you control gain flying until end of turn.

Cascade (When you cast this 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.)

Kicker and/or (You may pay an additional and/or as you cast this spell.)

When Stormscape Battlemage enters the battlefield, if it was kicked with its kicker, you gain 3 life.

When Stormscape Battlemage enters the battlefield, if it was kicked with its kicker, destroy target nonblack creature. That creature can't be regenerated.

Visit — Exile the top X cards of your library, where X is the number of Attractions you've visited this turn (including this one). You may play those cards this turn. At the beginning of the next end step, if any of those cards remain exiled, put them on the bottom of your library in any order.

Lights — 3, 4, 6

Until end of turn, target creature gains trample and gets +X/+X, where X is the number of attacking creatures.

When Striped Bears enters the battlefield, draw a card.

At the beginning of your end step, if an opponent lost life this turn, put a +1/+1 counter on target Vampire you control.

Enchant creature

Equip abilities you activate that target enchanted creature cost less to activate.

Aura spells you cast that target enchanted creature cost less to cast.

Enchanted creature gets +2/+2 for each Aura and Equipment attached to it.

, , Discard a card: Counter target creature spell.

Whenever Stubborn Burrowfiend becomes saddled for the first time each turn, mill two cards, then Stubborn Burrowfiend gets +X/+X until end of turn, where X is the number of creature cards in your graveyard.

Saddle 2 (Tap any number of other creatures you control with total power 2 or more: This Mount becomes saddled until end of turn. Saddle only as a sorcery.)

When Student of Elements has flying, flip it.

: Stuffed Bear becomes a 4/4 green Bear artifact creature until end of turn.

A person outside the game looks at target opponent's hand and chooses a nonland card from it. That player discards that card.

Haste

: Another target creature with power 2 or less can't be blocked this turn.

, , Discard your hand: Until end of turn, whenever a creature you control with power 2 or less deals combat damage to a player, draw a card.

Flying

When Subjugator Angel enters the battlefield, tap all creatures your opponents control.

Choose one or more —

• Counter target spell.

• Counter target activated or triggered ability.

• Return target nonland permanent to its owner's hand.

• Create a token that's a copy of target creature you control.

• Target player draws a card.

If an opponent controls a Forest and you control an Island, you may cast this spell without paying its mana cost.

Put target creature on top of its owner's library.

Subterranean Hangar enters the battlefield tapped.

: Put a storage counter on Subterranean Hangar.

, Remove any number of storage counters from Subterranean Hangar: Add for each storage counter removed this way.

When Subterranean Scout enters the battlefield, target creature with power 2 or less can't be blocked this turn.

Protection from red

: Subterranean Spirit deals 1 damage to each creature without flying.

Choose one or both —

• Target creature gets -1/-1 until end of turn.

• Put a +1/+1 counter on target creature.

At the beginning of your upkeep, each opponent loses 1 life. You gain life equal to the life lost this way.

You draw two cards and you lose 2 life.

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

Create a Treasure token. (It's an artifact with ", Sacrifice this artifact: Add one mana of any color.")

Split second (As long as this spell is on the stack, players can't cast spells or activate abilities that aren't mana abilities.)

Exchange control of target noncreature spell and target creature. Then the spell's controller may choose new targets for it.

Sulfurous Blast deals 2 damage to each creature and each player. If you cast this spell during your main phase, Sulfurous Blast deals 3 damage to each creature and each player instead.

Sumala Rumblers's power is equal to the number of creatures you control.

Myriad (Whenever this creature attacks, for each opponent other than defending player, you may create a token that's a copy of this creature that's tapped and attacking that player or a planeswalker they control. Exile the tokens at end of combat.)

Counter target creature spell. Create a 2/2 blue Illusion creature token.

Domain — : Until end of turn, Sunbathing Rootwalla gets +1/+1 for each basic land type among lands you control. Activate only once each turn.

Flying, vigilance, haste

Sunbird Effigy's power and toughness are each equal to the number of colors among the exiled cards used to craft it.

: For each color among the exiled cards used to craft Sunbird Effigy, add one mana of that color.

Whenever you cast a spell from your hand, reveal the top X cards of your library, where X is that spell's mana value. You may cast a spell with mana value X or less from among cards revealed this way without paying its mana cost. Put the rest on the bottom of your library in a random order.

Sunblade Elf gets +1/+1 as long as you control a Plains.

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

Flying

When Sunblast Angel enters the battlefield, destroy all tapped creatures.

When Sun-Blessed Mount enters the battlefield, you may search your library and/or graveyard for a card named Huatli, Dinosaur Knight, reveal it, then put it into your hand. If you searched your library this way, shuffle.

Bolster X, where X is the number of cards in your hand. Each creature you control with a +1/+1 counter on it gains trample until end of turn. (To bolster X, choose a creature with the least toughness among creatures you control and put X +1/+1 counters on it.)

Destroy target creature with toughness 4 or greater.

Kicker and/or (You may pay an additional and/or as you cast this spell.)

When Sunscape Battlemage enters the battlefield, if it was kicked with its kicker, destroy target creature with flying.

When Sunscape Battlemage enters the battlefield, if it was kicked with its kicker, draw two cards.

Superior Numbers deals damage to target creature equal to the number of creatures you control in excess of the number of creatures target opponent controls.