Squad (As an additional cost to cast this spell, you may pay any number of times. When this creature enters the battlefield, create that many tokens that are copies of it.)

Vigilance

Whenever a creature token enters the battlefield under your control, put a +1/+1 counter on it.

: Create a 1/1 white Soldier creature token. Activate only if you control no creatures and only once each turn.

All Sliver creatures have "This creature gets +1/+1 as long as you control a Swamp."

All Slivers have ": Regenerate this permanent." (The next time it would be destroyed, instead tap it, remove it from combat, and heal all damage on it.)

Menace

Ward—Pay 3 life. (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays 3 life.)

Magecraft — Whenever you cast or copy an instant or sorcery spell, create a 1/1 black and green Pest creature token with "When this creature dies, you gain 1 life."

Flying

Whenever Sedraxis Specter deals combat damage to a player, that player discards a card.

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.)

Draw two cards, then shuffle a card from your hand into your library.

Enchant creature

Enchanted creature gets +2/+1 and has first strike.

At the beginning of your end step, if you didn't attack with a creature this turn, sacrifice See Red.

Mill two cards. You may put a permanent card from among the milled cards into your hand. You gain 2 life. (To mill two cards, put the top two cards of your library into your graveyard.)

Whenever a land enters the battlefield, its controller creates a 1/1 green Snake creature token.

: Target creature gets +3/+3 until end of turn. Untap that creature.

Choose one —

• Return target Aura attached to a creature to its owner's hand.

• Regenerate target green creature.

• Target creature gains trample until end of turn.

Destroy all artifacts. They can't be regenerated. The controller of each of those artifacts gains life equal to its mana value.

Target creature gets +1/+1 until end of turn.

Target creature gets +1/+1 until end of turn.

Target creature gets +1/+1 until end of turn.

Search target opponent's library for a card and exile it. You gain life equal to its mana value. Then that player shuffles.

Exile the top two cards of your library. Until your next end step, you may play those cards.

Mill seven cards. Then put all cards that have an Adventure from among the milled cards into your hand.

: Add .

, Sacrifice Seething Landscape: Search your library for a basic Island, Swamp, or Mountain card, put it onto the battlefield tapped, then shuffle.

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

Megamorph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its megamorph cost and put a +1/+1 counter on it.)

Seismic Shudder deals 1 damage to each creature without flying.

Sekki, Seasons' Guide enters the battlefield with eight +1/+1 counters on it.

If damage would be dealt to Sekki, prevent that damage, remove that many +1/+1 counters from Sekki, and create that many 1/1 colorless Spirit creature tokens.

Sacrifice eight Spirits: Return Sekki from your graveyard to the battlefield.

Reveal the top seven cards of your library. Choose from among them a card with flying, a card with first strike, and so on for double strike, deathtouch, haste, hexproof, indestructible, lifelink, menace, reach, trample, and vigilance. Put one of the chosen cards onto the battlefield, the other chosen cards into your hand, and the rest into your graveyard.

Selesnya Guildgate enters the battlefield tapped.

: Add or .

Target opponent sacrifices a green or white creature. If that player does, they lose 2 life.

When Seller of Songbirds enters the battlefield, create a 1/1 white Bird creature token with flying.

Parley — : Each player reveals the top card of their library. For each nonland card revealed this way, add and you gain 1 life. Then each player draws a card.

Council's dilemma — Starting with you, each player votes for wild or free. Reveal cards from the top of your library until you reveal a creature card for each wild vote. Put those creature cards onto the battlefield, then shuffle the rest into your library. You may put a permanent card from your hand onto the battlefield for each free vote.

, : You gain 2 life.

, : Draw a card, then discard a card.

Flying

Whenever another creature dies, put two +1/+1 counters on Sengir, the Dark Baron.

Whenever another player loses the game, you gain life equal to that player's life total as the turn began.

Partner (You can have two commanders if both have partner.)

: Look at the top three cards of your library, then put them back in any order.

: Draw a card, then put Sensei's Divining Top on top of its owner's library.

Flash

When Sentinel of the Pearl Trident enters the battlefield, you may exile target historic permanent you control. If you do, return that card to the battlefield under its owner's control at the beginning of the next end step. (Artifacts, legendaries, and Sagas are historic.)

Flash

Flying

When Separatist Voidmage enters the battlefield, you may return target creature to its owner's hand.

Intimidate (This creature can't be blocked except by artifact creatures and/or creatures that share a color with it.)

When Sepulchral Primordial enters the battlefield, for each opponent, you may put up to one target creature card from that player's graveyard onto the battlefield under your control.

Flying, lifelink

Equipped creature gets +2/+2.

Whenever equipped creature attacks the player with the most life or tied for most life, create a 4/4 white Angel creature token with flying that's tapped and attacking that player.

Equip

Flying

At the beginning of your upkeep, sacrifice a land. If you sacrifice an Island this way, Serendib Djinn deals 3 damage to you.

When you control no lands, sacrifice Serendib Djinn.

: Target creature other than Serendib Sorcerer has base power and toughness 0/2 until end of turn.

Serpent of the Endless Sea's power and toughness are each equal to the number of Islands you control.

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

Backup 1 (When this creature enters the battlefield, put a +1/+1 counter on target creature. If that's another creature, it gains the following ability until end of turn.)

Deathtouch

Lifelink (Damage dealt by this creature also causes you to gain that much life.)

As long as you have 30 or more life, Serra Ascendant gets +5/+5 and has flying.

: Prevent the next 1 damage that would be dealt to any target this turn.

, : Target creature gains vigilance until end of turn.

Flying (This creature can't be blocked except by creatures with flying or reach.)

Vigilance (Attacking doesn't cause this creature to tap.)

Other creatures you control have vigilance.

: Put a -1/-1 counter on Serrated Biskelion and a -1/-1 counter on target creature.

: Add .

Any time you could mulligan and Serum Powder is in your hand, you may exile all the cards from your hand, then draw that many cards. (You can do this in addition to taking mulligans.)

Other Snake creatures you control get +2/+2.

Whenever a Snake you control deals combat damage to a player, you may draw a card.

Enchant creature

Enchanted creature gets +2/+2.

Threshold — As long as seven or more cards are in your graveyard, all creatures able to block enchanted creature do so.

Seek a basic land card and put it onto the battlefield tapped. Then seek a permanent card with mana value equal to the number of lands you control.

Exile target creature and all other creatures with the same name as that creature.

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

As an additional cost to cast this spell, sacrifice a creature.

You gain life equal to the sacrificed creature's toughness. Destroy target creature an opponent controls.

Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.)

Sacrifice Sewerdreg: Exile target card from a graveyard.