Magecraft — Whenever you cast or copy an instant or sorcery spell, target creature gets +1/+0 until end of turn.

Magecraft — Whenever you cast or copy an instant or sorcery spell, Silverquill Pledgemage gains your choice of flying or lifelink until end of turn.

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

, Remove one or more +1/+1 counters from Simic Manipulator: Gain control of target creature with power less than or equal to the number of +1/+1 counters removed this way.

Each player sacrifices an enchantment.

Enchant creature

Whenever enchanted creature attacks or blocks, its controller loses 2 life.

Until end of turn, you may cast target instant or sorcery card from your graveyard without paying its mana cost. If that spell would be put into your graveyard, exile it instead. Exile Sins of the Past.

When Siona, Captain of the Pyleas enters the battlefield, look at the top seven cards of your library. You may reveal an Aura card from among them and put it into your hand. Put the rest on the bottom of your library in a random order.

Whenever an Aura you control becomes attached to a creature you control, create a 1/1 white Human Soldier creature token.

Look at the top two cards of target opponent's library. Exile one of them face down and put the other on the bottom of that library. You may play the exiled card for as long as it remains exiled, and you may spend mana as though it were mana of any color to cast that spell.

Flashback

Medicus Ministorum — When Sister Hospitaller enters the battlefield, return target creature card from your graveyard to the battlefield. You gain life equal to its mana value.

, Sacrifice another creature or an artifact: For each opponent, you mill a card, then return that card from your graveyard to your hand unless that player pays 3 life. (To mill a card, put the top card of your library into your graveyard.)

Choose a Background (You can have a Background as a second commander.)

Bloodthirst 1 (If an opponent was dealt damage this turn, this creature enters the battlefield with a +1/+1 counter on it.)

Creatures with power less than Skarrgan Pit-Skulk's power can't block it.

Flying

When Skeletal Vampire enters the battlefield, create two 1/1 black Bat creature tokens with flying.

, Sacrifice a Bat: Create two 1/1 black Bat creature tokens with flying.

Sacrifice a Bat: Regenerate Skeletal Vampire.

Sacrifice a Goblin: Add .

, , Discard a card: Each player loses 2 life.

Devoid (This card has no color.)

Menace

Whenever you sacrifice a nontoken permanent, create a 0/1 colorless Eldrazi Spawn creature token with "Sacrifice this creature: Add ."

As long as it's your turn, Skophos Reaver gets +2/+0.

Madness (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

Deathtouch

Hyperphase Threshers — Whenever an artifact enters the battlefield under your control, Skorpekh Destroyer gains first strike until end of turn.

, , Sacrifice a creature: Skull Catapult deals 2 damage to any target.

When Skullcap Snail enters the battlefield, target opponent exiles a card from their hand.

When Skullport Merchant enters the battlefield, create a Treasure token. (It's an artifact with ", Sacrifice this artifact: Add one mana of any color.")

, Sacrifice another creature or a Treasure: Draw a card.

Flying, first strike

Trample

Landfall — Whenever a land enters the battlefield under your control, 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 the battlefield, 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

Whenever Skyship Plunderer deals combat damage to a player, for each kind of counter on target permanent or player, give that permanent or player another counter of that kind.

When Skyship Weatherlight enters the battlefield, search your library for any number of artifact and/or creature cards, exile them, then shuffle.

, : Choose a card at random that was exiled with Skyship Weatherlight. Put that card into its owner's hand.

: Add .

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 the battlefield, 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.

Tap all creatures target player controls. Those creatures don't untap during that player's next untap step.

Enchant creature

When Sleep Paralysis enters the battlefield, tap enchanted creature.

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

Flying, ward

Sleep-Cursed Faerie enters the battlefield tapped with three stun counters on it. (If it would become untapped, remove a stun counter from it instead.)

: Untap Sleep-Cursed Faerie.

When Sleeper Dart enters the battlefield, draw a card.

, Sacrifice Sleeper Dart: Target creature doesn't untap during its controller's next untap step.

Enchant creature

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

Whenever enchanted creature deals combat damage to an opponent, you may draw a card.

Living metal (As long as it's your turn, this Vehicle is also a creature.)

First strike, haste

Whenever Slicer deals combat damage to a player, convert it at end of combat.

If a black creature with flying is attacking, you may pay rather than pay this spell's mana cost.

Destroy target attacking creature with flying.

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

When Slinn Voda, the Rising Deep enters the battlefield, if it was kicked, return all creatures to their owners' hands except for Merfolk, Krakens, Leviathans, Octopuses, and Serpents.

Put a +1/+1 counter on target creature. It phases out. (Treat it and anything attached to it as though they don't exist until its controller's next turn.)

Flash

Hexproof

When Slippery Bogbonder enters the battlefield, put a hexproof counter on target creature. Then move any number of counters from among creatures you control onto that creature.

Slippery Karst enters the battlefield tapped.

: Add .

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

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

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

: Return Sliptide Serpent to its owner's hand.