Choose a creature you control, then each opponent chooses a creature they control with equal or lesser power. If you chose a creature this way, exile each creature not chosen by any player this way.

, Discard a card: Create a 0/3 blue Crab creature token.

Delirium — Crabs you control get +1/+1 as long as there are four or more card types among cards in your graveyard.

Scuttling Doom Engine can't be blocked by creatures with power 2 or less.

When Scuttling Doom Engine dies, it deals 6 damage to target opponent or planeswalker.

Landfall — Whenever a land enters the battlefield under your control, Scythe Leopard gets +1/+1 until end of turn.

Flying

When Sea Drake enters the battlefield, return two target lands you control to their owner's hand.

Return up to three target creatures and/or enchantments to their owners' hands.

: Target land becomes the basic land type of your choice until end of turn.

Mutate (If you cast this spell for its mutate cost, put it over or under target non-Human creature you own. They mutate into the creature on top plus all abilities from under it.)

Flash

Whenever this creature deals combat damage to a player, draw a card.

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

As Seal of the Guildpact enters the battlefield, choose two colors.

Each spell you cast costs less to cast for each of the chosen colors it is.

Searing Blood deals 2 damage to target creature. When that creature dies this turn, Searing Blood deals 3 damage to the creature's controller.

Searing Wind deals 10 damage to any target.

: Add .

, , Sacrifice a Bird: Draw a card.

Lifelink

When Seasoned Dungeoneer enters the battlefield, you take the initiative.

Whenever you attack, target attacking Cleric, Rogue, Warrior, or Wizard gains protection from creatures until end of turn. It explores. (Reveal the top card of your library. Put that card into your hand if it's a land. Otherwise, put a +1/+1 counter on the creature, then put the card back or put it into your graveyard.)

Whenever Seasoned Marshal attacks, you may tap target creature.

, Exile the top four cards of your library: The next time a source of your choice would deal damage to you this turn, prevent that damage.

: Add .

As Secluded Glen enters the battlefield, you may reveal a Faerie card from your hand. If you don't, Secluded Glen enters the battlefield tapped.

: Add or .

Up to two target creatures each get +2/+1 until end of turn. Create a Food token. (It's an artifact with ", , Sacrifice this artifact: You gain 3 life.")

Counter target spell that's the second spell cast this turn.

Choose one —

• Look at the top five cards of target opponent's library, then put them back in any order.

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

Entwine (Choose both if you pay the entwine cost.)

Exile target attacking creature.

Draw a card.

Defender

: Venture into the dungeon. Activate only as a sorcery. (Enter the first room or advance to the next room.)

Whenever you cast a spell from your graveyard, draw a card.

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.