Deathtouch

Whenever Scream Puff deals combat damage to a player, create a Food token. (It's an artifact with ", , Sacrifice this artifact: You gain 3 life.")

Target creature gets +5/+0 and gains haste until end of turn.

Flying

When Screaming Seahawk enters, you may search your library for a card named Screaming Seahawk, reveal it, put it into your hand, then shuffle.

Flying

Whenever you attack with one or more creatures, target player mills that many cards. (To mill a card, a player puts the top card of their library into their graveyard.)

: Put Screaming Swarm from your graveyard into your library second from the top.

Enchant creature

Enchanted creature gets -1/-1.

When enchanted creature dies, return Screams from Within from your graveyard to the battlefield.

Flying

At the beginning of your upkeep, you may pay . If you do, transform Screeching Bat.

Flying

When Screeching Drake enters, draw a card, then discard a card.

Flying, menace

Whenever Screeching Scorchbeast attacks, each player gets two rad counters.

Whenever one or more nonland cards are milled, you may create that many 2/2 black Zombie Mutant creature tokens. Do this only once each turn.

When Screeching Skaab enters, mill two cards.

: Manifest a card from your hand. (Put that card onto the battlefield face down as a 2/2 creature. Turn it face up any time for its mana cost if it's a creature card.)

Whenever you cast a noncreature spell, put a lore counter on Scroll of the Masters.

, : Target creature you control gets +1/+1 until end of turn for each lore counter on Scroll of the Masters.

Scrounging Bandar enters with two +1/+1 counters on it.

At the beginning of your upkeep, you may move any number of +1/+1 counters from Scrounging Bandar onto another target creature.

Flash

Flying, protection from blue

Return a Forest you control to its owner's hand: Untap target creature. Activate only once each turn.

Evolve (Whenever a creature you control enters, if that creature has greater power or toughness than this creature, put a +1/+1 counter on this creature.)

Whenever one or more +1/+1 counters are put on Scurry Oak, you may create a 1/1 green Squirrel creature token.

Defender

: Adapt 3. (If this creature has no +1/+1 counters on it, put three +1/+1 counters on it.)

As long as Scuttlegator has a +1/+1 counter on it, it can attack as though it didn't have defender.

Trample

Persist (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.)

Landfall — Whenever a land you control enters, Scythe Leopard gets +1/+1 until end of turn.

Whenever a player casts a spell, if it's not their turn, Scytheclaw Raptor deals 4 damage to them.

Flying

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

: Draw a card for each Ally you control.

Draw cards equal to the number of cards in your hand plus one. You have no maximum hand size for the rest of the game.

: Add . ( represents colorless mana.)

, : Draw a card. Activate only if you have no cards in hand.

Return up to three target creatures your opponents control to their owners' hands. Scry 1. (Look at the top card of your library. You may put that card on the bottom.)

When Sea Hag enters, creatures your opponents control get -4/-0 until end of turn.

Flash

Enchant creature

Enchanted creature gets +0/+2 as long as it's a Pirate. Otherwise, it gets -2/-0.

Sea of Clouds enters tapped unless you have two or more opponents.

: Add or .

Sea Serpent can't attack unless defending player controls an Island.

When you control no Islands, sacrifice Sea Serpent.

: Sea Spirit gets +1/+0 until end of turn.

: Regenerate Sea Troll. Activate only if Sea Troll blocked or was blocked by a blue creature this turn.

Flying

Blue legendary creatures you control have "bands with other legendary creatures." (Any legendary creatures can attack in a band as long as at least one has "bands with other legendary creatures." Bands are blocked as a group. If at least two legendary creatures you control, one of which has "bands with other legendary creatures," are blocking or being blocked by the same creature, you divide that creature's combat damage, not its controller, among any of the creatures it's being blocked by or is blocking.)

Seafloor Debris enters tapped.

: Add .

, Sacrifice Seafloor Debris: Add one mana of any color.

: Seafloor Stalker gets +1/+0 until end of turn and can't be blocked this turn. This ability costs less to activate for each creature in your party. (Your party consists of up to one each of Cleric, Rogue, Warrior, and Wizard.)

, : Search your library for a Merfolk permanent card, put it onto the battlefield, then shuffle.

Ward (Whenever this enchantment becomes the target of a spell or ability an opponent controls, counter it unless that player pays .)

When Seal from Existence enters, exile target nonland permanent an opponent controls until Seal from Existence leaves the battlefield.

Sacrifice Seal of Doom: Destroy target nonblack creature. It can't be regenerated.

Sacrifice Seal of Primordium: Destroy target artifact or enchantment.

Sacrifice Seal of Strength: Target creature gets +3/+3 until end of turn.

Look at the top X cards of target opponent's library. Exile one of those cards and put the rest back on top of that player's library in any order.

At the beginning of each upkeep, you may exile target creature card from your graveyard. If you do, create a token that's a copy of that card, except it's a Spirit in addition to its other types. Exile it at the beginning of the next end step.

Look at the top five cards of your library. You may put any number of them into your hand and the rest into your graveyard. You lose 3 life for each card you put into your hand this way.

Reorder your graveyard at random. An opponent chooses a card at random in your graveyard. If it's a creature card, put it onto the battlefield. Otherwise, exile it.

This spell costs less to cast for each creature you attacked with this turn.

When Search Party Captain enters, draw a card.

Whenever a creature attacks you or a planeswalker you control, investigate. (Create a Clue token. It's an artifact with ", Sacrifice this artifact: Draw a card.")

Flying

When Searchlight Companion enters, create a 1/1 colorless Spirit creature token.

Searing Barb deals 2 damage to any target. If it's a creature, it can't block this turn. Incubate 1. (Create an Incubator token with a +1/+1 counter on it and ": Transform this artifact." It transforms into a 0/0 Phyrexian artifact creature.)

Searing Blaze deals 1 damage to target player or planeswalker and 1 damage to target creature that player or that planeswalker's controller controls.

Landfall — If you had a land enter the battlefield under your control this turn, Searing Blaze deals 3 damage to that player or planeswalker and 3 damage to that creature instead.

Searing Flesh deals 7 damage to target opponent or planeswalker.

Whenever you gain life, you may pay . If you do, Searing Meditation deals 2 damage to any target.