Vigilance

Channel — , Discard Sunblade Samurai: Search your library for a basic Plains card, reveal it, put it into your hand, then shuffle. You gain 2 life.

Bolster X, where X is the number of cards in your hand. Each creature you control with a +1/+1 counter on it gains trample until end of turn. (To bolster X, choose a creature with the least toughness among creatures you control and put X +1/+1 counters on it.)

Destroy target land. Its controller may search their library for a basic land card, put it onto the battlefield tapped, then shuffle. Creatures without flying can't block this turn.

Destroy target artifact or enchantment, then populate. (Create a token that's a copy of a creature token you control.)

When Sundering Titan enters or leaves the battlefield, choose a land of each basic land type, then destroy those lands.

, : End the turn. Activate only during your turn. (Exile all spells and abilities from the stack. Discard down to your maximum hand size. Damage wears off, and "this turn" and "until end of turn" effects end.)

Prevent the next 4 damage that would be dealt to any target this turn.

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

When you cycle Sunfire Balm, you may prevent the next 1 damage that would be dealt to any target this turn.

Whenever Sunfrill Imitator attacks, you may have it become a copy of another target Dinosaur you control, except its name is Sunfrill Imitator and it has this ability.

, : Add .

: Add .

, : Target creature gains double strike until end of turn.

Sunken Citadel enters the battlefield tapped. As it enters, choose a color.

: Add one mana of the chosen color.

: Add two mana of the chosen color. Spend this mana only to activate abilities of land sources.

Enchant land

Enchanted land has ": Counter target spell unless its controller pays ."

As long as it's your turn, Sunlit Hoplite has first strike.

Sunlit Hoplite gets +1/+0 as long as you control an Elspeth planeswalker.

Trample, haste

If it's neither day nor night, it becomes day as Sunrise Cavalier enters the battlefield.

Whenever day becomes night or night becomes day, put a +1/+1 counter on target creature you control.

Other Giant creatures you control get +2/+2 and have trample.

Defender (This creature can't attack.)

Green spells and blue spells you cast cost less to cast.

When Sunscourge Champion enters the battlefield, you gain life equal to its power.

Eternalize—, Discard a card. (, Discard a card, Exile this card from your graveyard: Create a token that's a copy of it, except it's a 4/4 black Zombie Human Wizard with no mana cost. Eternalize only as a sorcery.)

Tap two untapped artifacts and/or creatures you control: Sunshot Militia deals 1 damage to each opponent. Activate only as a sorcery.

When Sunspire Gatekeepers enters the battlefield, if you control two or more Gates, create a 2/2 white Knight creature token with vigilance.

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

Remove three quest counters from Sunspring Expedition and sacrifice it: You gain 8 life.

Sunstrike Legionnaire doesn't untap during your untap step.

Whenever another creature enters the battlefield, untap Sunstrike Legionnaire.

: Tap target creature with mana value 3 or less.

Conjure a card named Suntail Hawk into your hand. If you have fewer than seven cards in hand, repeat this process.

Until end of turn, target creature gets +2/+0 and gains "When this creature dies, return it to the battlefield tapped under its owner's control."

Flying

When Supply-Line Cranes enters the battlefield, put a +1/+1 counter on target creature.

Activated abilities cost more to activate unless they're mana abilities.

Tap five untapped Wizards you control: Search target player's library for up to five cards and exile them. Then that player shuffles.

Choose one —

• Counter target spell unless its controller pays .

• Look at the top four cards of your library. Put one of them into your hand and the rest on the bottom of your library in any order.

Suq'Ata Firewalker can't be the target of red spells or abilities from red sources.

: Suq'Ata Firewalker deals 1 damage to any target.

Tap another untapped Rogue you control: Sure-Footed Infiltrator can't be blocked this turn.

Whenever Sure-Footed Infiltrator deals combat damage to a player, draw a card.

Defender

: Surge Engine loses defender and gains "This creature can't be blocked."

: Surge Engine becomes blue and has base power and toughness 5/4. Activate only if Surge Engine doesn't have defender.

: Draw three cards. Activate only if Surge Engine is blue and only once.

Destroy target black or red creature that's attacking or blocking. You gain 2 life.

Exile target instant or sorcery card from your graveyard. Creatures you control get +X/+0 until end of turn, where X is that card's mana value. Whenever a creature you control deals combat damage to a player this turn, copy the exiled card. You may cast the copy without paying its mana cost.

, Sacrifice Surgical Skullbomb: Draw a card.

, Sacrifice Surgical Skullbomb: Return target creature to its owner's hand. Draw a card. Activate only as a sorcery.

Ripple 4 (When you cast this spell, you may reveal the top four cards of your library. You may cast spells with the same name as this spell from among those cards without paying their mana costs. Put the rest on the bottom of your library.)

Target player discards a card.

Enchant creature

Enchanted creature gets +2/+2.

Ripple 4 (When you cast this spell, you may reveal the top four cards of your library. You may cast spells with the same name as this spell from among those cards without paying their mana costs. Put the rest on the bottom of your library.)

Cast this spell only during combat.

You may put a nonwhite creature card from your hand onto the battlefield. At the beginning of the next end step, return that creature to your hand. (Return it only if it's on the battlefield.)

When Surrakar Banisher enters the battlefield, you may return target tapped creature to its owner's hand.

As an additional cost to cast this spell, reveal a Giant card from your hand or pay .

Whenever Surtland Elementalist attacks, you may cast an instant or sorcery spell from your hand without paying its mana cost.

Trample (This creature can deal excess combat damage to the player it's attacking.)

Whenever you cast a historic spell, Surtr, Fiery Jötun deals 3 damage to any target. (Artifacts, legendaries, and Sagas are historic.)

Flying

When Surveilling Sprite dies, you may draw a card.

, Discard a creature card: Search your library for a creature card, reveal that card, put it into your hand, then shuffle.

Target creature gets +1/+0 and gains indestructible until end of turn. (Damage and effects that say "destroy" don't destroy it.)

Investigate. (Create a Clue token. It's an artifact with ", Sacrifice this artifact: Draw a card.")

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.)

: Draw two cards, then put a card from your hand on top of your library.

: Add .

, Tap an untapped creature you control: Add one mana of any color.

When Suspension Field enters the battlefield, you may exile target creature with toughness 3 or greater until Suspension Field leaves the battlefield. (That creature returns under its owner's control.)

This spell costs less to cast if you've sacrificed an artifact this turn.

This spell can't be countered. (This includes by the ward ability.)

Suspicious Detonation deals 4 damage to target creature.

, Exile Suspicious Shambler from your graveyard: Create two 2/2 black Zombie creature tokens. Activate only as a sorcery.

Flying

Whenever Sustainer of the Realm blocks, it gets +0/+2 until end of turn.

Whenever another creature enters the battlefield under your control, you may gain 1 life.

Whenever a creature enters the battlefield under an opponent's control, you may have that player lose 1 life.

, : Create a colorless snow artifact token named Icy Manalith with ": Add one mana of any color."

, : Look at the top four cards of your library. You may cast a spell from among them without paying its mana cost. Put the rest on the bottom of your library in a random order.