Menace

Command Protocols — Other artifact creatures you control get +1/+0 and have menace.

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.)

: Add or .

: Mill two cards.

Equipped creature gets +1/-1.

Whenever equipped creature dies, draw two cards.

Equip

Flying

Eerie — Whenever an enchantment you control enters and whenever you fully unlock a Room, surveil 1. (Look at the top card of your library. You may put it into your graveyard.)

Flying, first strike

Trample

Landfall — Whenever a land you control enters, Skyclave Geopede gets +2/+2 until end of turn.

Look at the top X cards of your library, where X is three plus the number of creatures in your party. Put three of those cards into your hand and the rest on the bottom of your library in a random order. (Your party consists of up to one each of Cleric, Rogue, Warrior, and Wizard.)

Flying, haste

When you cast your commander, return Skyfire Phoenix from your graveyard to the battlefield.

Flying, first strike (This creature can't be blocked except by creatures with flying or reach, and it deals combat damage before creatures without first strike.)

Flying

When Skyline Despot enters, you become the monarch.

At the beginning of your upkeep, if you're the monarch, create a 5/5 red Dragon creature token with flying.

Ascend (If you control ten or more permanents, you get the city's blessing for the rest of the game.)

Skymarcher Aspirant has flying as long as you have the city's blessing.

Flying

At the beginning of combat on your turn, you may pay . When you do, put a +1/+1 counter on another target creature you control, and that creature gains flying until end of turn.

Flying

Raid — When this creature enters, if you attacked this turn, draw a card.

Flying

: Skyship Stalker gets +1/+0 until end of turn.

: Skyship Stalker gains first strike until end of turn.

: Skyship Stalker gains haste until end of turn.

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

Flying

Discard a creature card: Skyshroud Vampire gets +2/+2 until end of turn.

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

Reach (This creature can block creatures with flying.)

Flying

Double strike (This creature deals both first-strike and regular combat damage.)

Flying

When Skywarp Skaab enters, you may exile two creature cards from your graveyard. If you do, draw a card.

Reach (This creature can block creatures with flying.)

: Skyway Sniper deals 1 damage to target creature with flying.

Destroy target nonblack creature.

At the beginning of your next upkeep, pay . If you don't, you lose the game.

Whenever you sacrifice a permanent, Slaughter-Priest of Mogis gets +2/+0 until end of turn.

, Sacrifice another creature or an enchantment: Slaughter-Priest of Mogis gains first strike until end of turn.

Equipped creature gets +4/+2.

Whenever equipped creature dies, if it was a Human, create a 1/1 white Spirit creature token with flying.

Equip

Tap target creature. It doesn't untap during its controller's next untap step.

Escape—, Exile three other cards from your graveyard. (You may cast this card from your graveyard for its escape cost.)

Enchant creature

When Sleep with the Fishes enters, tap enchanted creature and you create a 1/1 blue Fish creature token with "This creature can't be blocked."

Enchanted creature doesn't untap during its controller's untap step.

When Sleeper Agent enters, target opponent gains control of it.

At the beginning of your upkeep, Sleeper Agent deals 2 damage to you.

Enchant creature

Enchanted creature has fear. (It can't be blocked except by artifact creatures and/or black creatures.)

When Sleeper's Guile is put into a graveyard from the battlefield, return Sleeper's Guile to its owner's hand.

Enchant creature

When Sleeping Potion enters, tap enchanted creature.

Enchanted creature doesn't untap during its controller's untap step.

When enchanted creature becomes the target of a spell or ability, sacrifice Sleeping Potion.

When Slickshot Lockpicker enters, target instant or sorcery card in your graveyard gains flashback until end of turn. The flashback cost is equal to its mana cost. (You may cast that card from your graveyard for its flashback cost. Then exile it.)

Plot (You may pay and exile this card from your hand. Cast it as a sorcery on a later turn without paying its mana cost. Plot only as a sorcery.)

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

Exile target creature you own, then return it to the battlefield under your control. The Ring tempts you.

Devoid (This card has no color.)

Target creature can't be blocked this turn.

Draw a card.

Hexproof (This creature can't be the target of spells or abilities your opponents control.)

Ascend (If you control ten or more permanents, you get the city's blessing for the rest of the game.)

As long as you have the city's blessing, Slippery Scoundrel has hexproof and can't be blocked.

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

When you control no Islands, sacrifice Slipstream Serpent.

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

Trample

Whenever Slith Predator deals combat damage to a player, put a +1/+1 counter on it.

Flash

Whenever you cast another spell that has flash, you draw a card and each opponent loses 1 life.

Slivers you control have hope. (Prevent all damage that would be dealt to attacking creatures with hope.)

Jolly Gutpipes — , , Sacrifice a creature: The next creature spell you cast this turn has cascade. (When you next cast a creature 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.)

When Slum Reaper enters, each player sacrifices a creature of their choice.

Slumbering Waterways enters the battlefield tapped.

: Add or .

Flying, vigilance, trample

Whenever Sly Spy deals combat damage to a player, you may destroy target creature facing left in its art. (Creatures without faces don't face anywhere.)

Whenever Sly Spy deals combat damage to a player, you may destroy target creature facing right in its art. (Creatures without faces don't face anywhere.)

Whenever Sly Spy deals combat damage to a player, roll a six-sided die. That player loses life equal to the result.

At the beginning of your end step, if a creature died under your control this turn, the Ring tempts you.

Whenever the Ring tempts you, target opponent reveals cards from the top of their library until they reveal a land card. Put that card onto the battlefield tapped under your control and the rest into their graveyard.

When Smelt-Ward Gatekeepers enters, if you control two or more Gates, gain control of target creature an opponent controls until end of turn. Untap that creature. It gains haste until end of turn.

For each of up to X target creatures, create a red Aura enchantment token named Smoke Blessing attached to that creature. Those tokens have enchant creature and "When enchanted creature dies, it deals 1 damage to its controller and you create a Treasure token."

Smoldering Spires enters tapped.

When Smoldering Spires enters, target creature can't block this turn.

: Add .

Flying

Whenever Smuggler's Copter attacks or blocks, you may draw a card. If you do, discard a card.

Crew 1 (Tap any number of creatures you control with total power 1 or more: This Vehicle becomes an artifact creature until end of turn.)

Whenever an opponent casts a blue or black spell, you may create a 1/1 green Snake creature token.