Whenever another blue creature you control enters, target player mills two cards.

Improvise (Each artifact you tap after you're done activating mana abilities pays for .)

Reveal the top X cards of your library. You may put any number of artifact cards with mana value X or less from among them onto the battlefield. Then put all cards revealed this way that weren't put onto the battlefield into your graveyard.

Whenever Saint Traft and Rem Karolus becomes tapped, create a 1/1 red Human creature token if this is the first time this ability has resolved this turn. If it's the second time, create a 1/1 blue Spirit creature token with flying. If it's the third time, create a 4/4 white Angel creature token with flying.

Whenever you cast a spell that has convoke, untap Saint Traft and Rem Karolus.

Ninjutsu (, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.)

You may have Sakashima's Student enter as a copy of any creature on the battlefield, except it's a Ninja in addition to its other creature types.

Whenever another permanent you control is turned face up, if it's a creature, put two +1/+1 counters on it.

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.)

Salt Road Quartermasters enters with two +1/+1 counters on it.

, Remove a +1/+1 counter from Salt Road Quartermasters: Put a +1/+1 counter on target creature.

: Target creature gets -2/-0 until end of turn.

: Add one mana of any color. Activate only once each turn.

: Creatures you control gain protection from the colors of target permanent you control until end of turn.

+1: Up to one target creature gains double strike until end of turn.

−2: Samut, the Tested deals 2 damage divided as you choose among one or two targets.

−7: Search your library for up to two creature and/or planeswalker cards, put them onto the battlefield, then shuffle.

Flash

When Samwise the Stouthearted enters, choose up to one target permanent card in your graveyard that was put there from the battlefield this turn. Return it to your hand. Then the Ring tempts you.

As Sanctuary Blade becomes attached to a creature, choose a color.

Equipped creature gets +2/+0 and has protection from the last chosen color.

Equip

Flying

Sanctuary Warden enters with two shield counters on it.

Whenever Sanctuary Warden enters or attacks, you may remove a counter from a creature or planeswalker you control. If you do, draw a card and create a 1/1 green and white Citizen creature token.

Sacrifice Sanctum Guardian: The next time a source of your choice would deal damage to any target this turn, prevent that damage.

Scry 1, then draw a card. (Then exile this card. You may cast the creature later from exile.)

When Sand Scout enters, if an opponent controls more lands than you, search your library for a Desert card, put it onto the battlefield tapped, then shuffle.

Whenever one or more land cards are put into your graveyard from anywhere, create a 1/1 red, green, and white Sand Warrior creature token. This ability triggers only once each turn.

Islandwalk (This creature can't be blocked as long as defending player controls an Island.)

You may choose not to untap Sand Squid during your untap step.

: Tap target creature. That creature doesn't untap during its controller's untap step for as long as Sand Squid remains tapped.

, : Target creature gains islandwalk until end of turn. When that creature dies this turn, destroy Sandals of Abdallah. (A creature with islandwalk can't be blocked as long as defending player controls an Island.)

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

Sandblast deals 5 damage to target attacking or blocking creature.

, : Target player mills X cards.

Enchant creature

Prevent all combat damage that would be dealt to and dealt by enchanted creature.

Flash

When Sandstalker Moloch enters, if an opponent cast a blue and/or black spell this turn, look at the top four cards of your library. You may reveal a permanent card from among them and put it into your hand. Put the rest on the bottom of your library in a random order.

Reach

When Sandsteppe Mastodon enters, bolster 5. (Choose a creature with the least toughness among creatures you control and put five +1/+1 counters on it.)

When Sandsteppe Scavenger enters, bolster 2. (Choose a creature with the least toughness among creatures you control and put two +1/+1 counters on it.)

Sandstone Bridge enters tapped.

When Sandstone Bridge enters, target creature gets +1/+1 and gains vigilance until end of turn.

: Add .

Sandstone Needle enters tapped with two depletion counters on it.

, Remove a depletion counter from Sandstone Needle: Add . If there are no depletion counters on Sandstone Needle, sacrifice it.

First strike (This creature deals combat damage before creatures without first strike.)

: Sandstone Warrior gets +1/+0 until end of turn.

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.)

When Sandstorm Salvager enters, create a 3/3 colorless Golem artifact creature token.

, : Put a +1/+1 counter on each creature token you control. They gain trample until end of turn.

Flying

Whenever an opponent casts a spell during their turn, they can't attack you or planeswalkers you control this turn.

Each opponent who attacked you or a planeswalker you control this turn can't cast spells.

Whenever you gain life, target opponent loses that much life.

This spell costs less to cast if you've gained 3 or more life this turn.

Return up to two target creature cards from your graveyard to your hand.

Flying

Whenever Sapphire Dragon attacks or blocks, scry 2.

Blue spells you cast cost less to cast.

Whenever Saradoc, Master of Buckland or another nontoken creature you control with power 2 or less enters, create a 1/1 white Halfling creature token.

Tap two other untapped Halflings you control: Saradoc gets +2/+0 and gains lifelink until end of turn.

As long as it's your turn and you control four or more Mountains, Sardian Cliffstomper gets +X/+0, where X is the number of Mountains you control.

0: Reveal the top card of your library and put it into your hand. Sarkhan the Mad deals damage to himself equal to that card's mana value.

−2: Target creature's controller sacrifices it, then that player creates a 5/5 red Dragon creature token with flying.

−4: Each Dragon creature you control deals damage equal to its power to target player or planeswalker.

+1: You may discard a card. If you do, draw a card.

+1: Add two mana in any combination of colors. Spend this mana only to cast Dragon spells.

−7: Create four 5/5 red Dragon creature tokens with flying.

+1: Dragon cards in your hand perpetually gain "This spell costs less to cast", and "You may pay rather than pay this spell's mana cost, where X is its mana value."

0: Conjure a card named Shivan Dragon into your hand.

−2: Sarkhan, Wanderer to Shiv deals 3 damage to target creature.

As Sarpadian Empires, Vol. VII enters, choose white Citizen, blue Camarid, black Thrull, red Goblin, or green Saproling.

, : Create a 1/1 creature token of the chosen color and type.

Whenever you cast a noncreature spell, amass Orcs X, where X is that spell's mana value. (Put X +1/+1 counters on an Army you control. It's also an Orc. If you don't control an Army, create a 0/0 black Orc Army creature token first.)

Goblins and Orcs you control have ward .

Whenever a land you control is tapped for mana, add an additional one mana of any type that land produced for each other land you control with the same name as it.

2 — Whenever this creature attacks, create a Treasure token.

5 — : Target creature gains flying until end of turn.

2 — 3/2

6 — 10/10

When Satyr Grovedancer enters, put a +1/+1 counter on target creature.

When Satyr Wayfinder enters, reveal the top four cards of your library. You may put a land card from among them into your hand. Put the rest into your graveyard.

When you cast this spell, amass Orcs 5, mill five cards, then return a creature card from your graveyard to the battlefield.

Trample

Whenever a commander an opponent controls dies, the Ring tempts you.

When Sauron, the Lidless Eye enters, gain control of target creature an opponent controls until end of turn. Untap it. It gains haste until end of turn.

: Creatures you control get +2/+0 until end of turn. Each opponent loses 2 life.

Savage Lands enters tapped.

: Add , , or .

At the beginning of your upkeep, put a spore counter on Savage Thallid.

Remove three spore counters from Savage Thallid: Create a 1/1 green Saproling creature token.

Sacrifice a Saproling: Regenerate target Fungus.