Flying

: Search your library for a Dragon permanent card and put it into your graveyard. If you do, Scion of the Ur-Dragon becomes a copy of that card until end of turn. Then shuffle.

Flying

Devoid (This card has no color.)

When Scion Summoner enters the battlefield, create a 1/1 colorless Eldrazi Scion creature token. It has "Sacrifice this creature: Add ." ( represents colorless mana.)

Add or subtract 1 from target creature's power, target player's life total, or target die roll's result.

Draw a card.

Whenever Scorch Spitter attacks, it deals 1 damage to the player or planeswalker it's attacking.

As an additional cost to cast this spell, discard X land cards.

Destroy X target lands.

, Sacrifice a creature: Scorched Rusalka deals 1 damage to target player or planeswalker.

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

Scorching Lava deals 2 damage to any target. If this spell was kicked, that creature can't be regenerated this turn and if it would die this turn, exile it instead.

Scorching Shot deals 5 damage to target creature.

Cast this spell only during the declare attackers step and only if you've been attacked this step.

Scorching Winds deals 1 damage to each attacking creature.

Bloodrush — , Discard Scorchwalker: Target attacking creature gets +5/+1 until end of turn.

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.)

: Add .

At the beginning of each upkeep, if no spells were cast last turn, transform Scorned Villager.

Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)

Scry 2, then draw a card.

Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Exile target creature card from your graveyard. Create X 1/1 white Bird creature tokens with flying, where X is the exiled card's toughness.

Scoured Barrens enters the battlefield tapped.

When Scoured Barrens enters the battlefield, you gain 1 life.

: Add or .

When Scourge of Fleets enters the battlefield, return each creature your opponents control with toughness X or less to its owner's hand, where X is the number of Islands you control.

Flying

: Scourge of Kher Ridges deals 2 damage to each creature without flying.

: Scourge of Kher Ridges deals 6 damage to each other creature with flying.

At the beginning of your upkeep, you lose 2 life if you don't control an Ogre.

Enchant creature

As long as enchanted creature is red, it gets +1/+1 and has ": This creature gets +1/+0 until end of turn."

As long as enchanted creature is white, it gets +1/+1 and has lifelink. (Damage dealt by the creature also causes its controller to gain that much life.)

Flying

Dethrone (Whenever this creature attacks the player with the most life or tied for most life, put a +1/+1 counter on it.)

Whenever Scourge of the Throne attacks for the first time each turn, if it's attacking the player with the most life or tied for most life, untap all attacking creatures. After this phase, there is an additional combat phase.

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

Enchant creature

When Scourgemark enters the battlefield, draw a card.

Enchanted creature gets +1/+0.

Scouring Sands deals 1 damage to each creature your opponents control. Scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.)

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

Search your library for a basic land card, put it onto the battlefield tapped, then shuffle. If this spell was kicked, create two 1/1 white Soldier creature tokens.

Search your library for any number of basic land cards, reveal those cards, then shuffle and put them on top.

: Target player exiles a card from their graveyard.

, Sacrifice Scrabbling Claws: Exile target card from a graveyard. Draw a card.

For each nonland permanent, choose a player at random. Then each player gains control of each permanent for which they were chosen. Untap those permanents.

Each player exiles all artifact cards from their graveyard, then sacrifices all artifacts they control, then puts all cards they exiled this way onto the battlefield.

, Sacrifice an artifact with mana value X: Return target artifact card with mana value less than X from your graveyard to the battlefield. It gains haste until end of turn.

Scrapdiver Serpent can't be blocked as long as defending player controls an artifact.

Scrapheap Scrounger can't block.

, Exile another creature card from your graveyard: Return Scrapheap Scrounger from your graveyard to the battlefield.

Whenever Scrappy Bruiser attacks, up to one target attacking creature gets +2/+0 and gains trample until end of turn. Return that creature to its owner's hand at end of combat. (Return it only if it's on the battlefield.)

When Scrapwork Cohort enters the battlefield, create a 1/1 colorless Soldier artifact creature token.

Unearth (: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.)

When Scrapwork Rager enters the battlefield, you draw a card and you lose 1 life.

Unearth (: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.)

Modular 2 (This creature enters the battlefield with two +1/+1 counters on it. When it dies, you may put its +1/+1 counters on target artifact creature.)

, Sacrifice an artifact: Search your library for a Construct card, reveal it, put it into your hand, then shuffle.

, Sacrifice another artifact: Scrapyard Steelbreaker gets +2/+1 until end of turn.

Trample

Bio-Plasmic Scream — Whenever you cast a creature spell with mana value 5 or greater, Screamer-Killer deals 5 damage to any target.

Flying

Whenever Screaming Phantom attacks, mill a card. (Put the top card of your library into your graveyard.)

Equipped creature gets +0/+3 and has ", : Target player mills three cards."

Equip (: Attach to target creature you control. Equip only as a sorcery.)

Dash (You may cast this spell for its dash cost. If you do, it gains haste, and it's returned from the battlefield to its owner's hand at the beginning of the next end step.)

, Exile a card from your graveyard: Screams of the Damned deals 1 damage to each creature and each player.

Flying

When Screeching Buzzard dies, each opponent discards a card.

Flying

: Target creature can't block Screeching Griffin this turn.

Flying

: Creatures you control get +1/+0 until end of turn.

Flying

Metalcraft — Whenever Screeching Silcaw deals combat damage to a player, if you control three or more artifacts, that player mills four cards.

All Slivers have ": Target player mills a card."

, , Sacrifice Scribe of the Mindful: Return target instant or sorcery card from your graveyard to your hand.