Skemfar Elderhall enters the battlefield tapped.

: Add .

, , Sacrifice Skemfar Elderhall: Up to one target creature you don't control gets -2/-2 until end of turn. Create two 1/1 green Elf Warrior creature tokens. Activate only as a sorcery.

Sacrifice a Goblin: Add .

, , Sacrifice a creature: Skirsdag Cultist deals 2 damage to any target.

When you cast a creature spell, sacrifice Skittering Horror.

When you cast a creature spell, sacrifice Skittering Monstrosity.

Flying

When you cast a creature spell, sacrifice Skittering Skirge.

Haste

Echo—Sacrifice two lands. (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)

, Sacrifice another creature or an enchantment: Skophos Warleader gets +1/+0 and gains menace until end of turn. (It can't be blocked except by two or more creatures.)

Flying

When Skulking Ghost becomes the target of a spell or ability, sacrifice it.

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

Flying

When Skull Saucer enters the battlefield, destroy target creature and put your head on the table. Sacrifice Skull Saucer when your head stops touching the table.

When you cast this spell, copy it for each time you've cast your commander from the command zone this game.

Each opponent sacrifices a creature. Each opponent who can't loses half their life, rounded up.

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.

Reach

Whenever you cast a spell with mana value 5 or greater, create a Food token. (It's an artifact with ", , Sacrifice this artifact: You gain 3 life.")

, Sacrifice another creature: Put a +1/+1 counter on Skyclave Shadowcat.

Whenever a creature you control with a +1/+1 counter on it dies, draw a card.

Reach

When Skyfisher Spider enters the battlefield, you may sacrifice another creature. When you do, destroy target nonland permanent.

When Skyfisher Spider dies, you may gain 1 life for each creature card in your graveyard. If you do, exile Skyfisher Spider from your graveyard.

Reach (This creature can block creatures with flying.)

, Sacrifice Skyshooter: Destroy target attacking or blocking creature with flying.

Fading 2 <I>(This creature enters the battlefield with two fade counters on it. At the beginning of your upkeep, remove a fade counter from it. If you can't, sacrifice it.)</I>

Each player chooses any number of creatures they control with total power 4 or less, then sacrifices all other creatures they control.

Gain control of target creature. Untap that creature. It gains haste until end of turn. Sacrifice it at the beginning of the next end step.

When Sleeper Dart enters the battlefield, draw a card.

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

More Than Meets the Eye (You may cast this card converted for .)

Double strike, haste

At the beginning of each opponent's upkeep, you may have that player gain control of Slicer until end of turn. If you do, untap Slicer, goad it, and it can't be sacrificed this turn. If you don't, convert it.

When Sling-Gang Lieutenant enters the battlefield, create two 1/1 red Goblin creature tokens.

Sacrifice a Goblin: Target player loses 1 life and you gain 1 life.

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.)

Eldrazi you control are Slivers in addition to their other types.

Slivers you control have devoid and have annihilator 1.

: Create a 1/1 colorless Eldrazi Sliver creature token. It has "Sacrifice this creature: Add ."

Sacrifice an artifact: Target artifact gains indestructible until end of turn.

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 the battlefield, each player sacrifices a creature.

Destroy target artifact or land. If an artifact is destroyed this way, create a Treasure token. (It's an artifact with ", Sacrifice this artifact: Add one mana of any color.")

, Sacrifice Smelt-Ward Ignus: Gain control of target creature with power 3 or less until end of turn. Untap that creature. It gains haste until end of turn. Activate only as a sorcery.

At the beginning of your upkeep, target player loses 1 life.

Sacrifice Smoldering Tar: It deals 4 damage to target creature. Activate only as a sorcery.

Whenever an opponent draws a card, that player may pay . If the player doesn't, you create a Treasure token. (It's an artifact with ", Sacrifice this artifact: Add one mana of any color.")

: You may put a creature card from your hand onto the battlefield. That creature gains haste. Sacrifice the creature at the beginning of the next end step.

You may cast Soar as though it had flash. If you cast it any time a sorcery couldn't have been cast, the controller of the permanent it becomes sacrifices it at the beginning of the next cleanup step.

Enchant creature

Enchanted creature gets +0/+1 and has flying.

Choose one —

• Destroy all creatures with power 2 or less.

• Destroy all creatures with power 3 or greater.

Entwine—Sacrifice two lands. (Choose both if you pay the entwine cost.)

If Soldevi Excavations would enter the battlefield, sacrifice an untapped Island instead. If you do, put Soldevi Excavations onto the battlefield. If you don't, put it into its owner's graveyard.

: Add .

, : Scry 1.

Cumulative upkeep (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)

: Soldevi Simulacrum gets +1/+0 until end of turn.

At the beginning of your upkeep, sacrifice Solitary Confinement unless you discard a card.

Skip your draw step.

You have shroud. (You can't be the target of spells or abilities.)

Prevent all damage that would be dealt to you.

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)

I, II — Until your next turn, creatures you control gain ": Add one mana of any color."

III — Put a +1/+1 counter on each creature you control. Those creatures gain vigilance, trample, and indestructible until end of turn.

Whenever you sacrifice another permanent, you may pay . If you do, create a token that's a copy of Sorcerer's Broom.

+1: Target creature you control gains deathtouch and lifelink until end of turn. If it's a Vampire, put a +1/+1 counter on it.

+1: You may sacrifice a Vampire. When you do, Sorin, Imperious Bloodlord deals 3 damage to any target and you gain 3 life.

−3: You may put a Vampire creature card from your hand onto the battlefield.

Soul Echo enters the battlefield with X echo counters on it.

You don't lose the game for having 0 or less life.

At the beginning of your upkeep, sacrifice Soul Echo if there are no echo counters on it. Otherwise, target opponent may choose that for each 1 damage that would be dealt to you until your next upkeep, you remove an echo counter from Soul Echo instead.

Flying

When Soul of Migration enters the battlefield, create two 1/1 white Bird creature tokens with flying.

Evoke (You may cast this spell for its evoke cost. If you do, it's sacrificed when it enters the battlefield.)

, , Sacrifice Soul Separator: Exile target creature card from your graveyard. Create a token that's a copy of that card, except it's 1/1, it's a Spirit in addition to its other types, and it has flying. Create a black Zombie creature token with power equal to that card's power and toughness equal to that card's toughness.

Each opponent sacrifices a creature or planeswalker with the highest mana value among creatures and planeswalkers they control.

Landfall — Whenever a land enters the battlefield under your control, you may put a quest counter on Soul Stair Expedition.

Remove three quest counters from Soul Stair Expedition and sacrifice it: Return up to two target creature cards from your graveyard to your hand.

As an additional cost to cast this spell, sacrifice all creatures you control.

Soulblast deals damage to any target equal to the total power of the sacrificed creatures.

When Soul-Guide Lantern enters the battlefield, exile target card from a graveyard.

, Sacrifice Soul-Guide Lantern: Exile each opponent's graveyard.

, , Sacrifice Soul-Guide Lantern: Draw a card.

As an additional cost to cast this spell, discard a card or sacrifice a permanent.

Fathomless descent — Souls of the Lost's power is equal to the number of permanent cards in your graveyard and its toughness is equal to that number plus 1.

Defender (This creature can't attack.)

, Sacrifice Soulsworn Jury: Counter target creature spell.