You may choose not to untap Rust Tick during your untap step.

, : Tap target artifact. It doesn't untap during its controller's untap step for as long as Rust Tick remains tapped.

Rusted Sentinel enters tapped.

As Rustic Clachan enters, you may reveal a Kithkin card from your hand. If you don't, Rustic Clachan enters tapped.

: Add .

Reinforce 1— (, Discard this card: Put a +1/+1 counter on target creature.)

Spree (Choose one or more additional costs.)

+ — Untap all creatures target player controls.

+ — Target creature gains double strike until end of turn.

First strike

Wither (This deals damage to creatures in the form of -1/-1 counters.)

When Rustspore Ram enters, destroy target Equipment.

: Put an oil counter on Rustvine Cultivator.

, Remove an oil counter from Rustvine Cultivator: Untap target land.

Ruthless Cullblade gets +2/+1 as long as an opponent has 10 or less life.

As an additional cost to cast this spell, discard a card and sacrifice a creature.

Two target creatures each get -13/-13 until end of turn.

( can be paid with either or 2 life.)

Nonartifact creatures can't block this turn.

When Ruthless Lawbringer enters, you may sacrifice another creature. When you do, destroy target nonland permanent.

Target creature you control gets +1/+2 until end of turn. It fights target creature you don't control. (Each deals damage equal to its power to the other.)

Deathtouch

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

When Ruthless Ripper is turned face up, target player loses 2 life.

When Ruthless Technomancer enters, you may sacrifice another creature you control. If you do, create a number of Treasure tokens equal to that creature's power.

, Sacrifice X artifacts: Return target creature card with power X or less from your graveyard to the battlefield. X can't be 0.

Whenever Ruxa, Patient Professor enters or attacks, return target creature card with no abilities from your graveyard to your hand.

Creatures you control with no abilities get +1/+1.

For each creature you control with no abilities, you may have that creature assign its combat damage as though it weren't blocked.

Whenever Rysorian Badger attacks and isn't blocked, you may exile up to two target creature cards from defending player's graveyard. If you do, you gain 1 life for each card exiled this way and Rysorian Badger assigns no combat damage this turn.

, : Look at the top card of target player's library. If it has an Agents of S.N.E.A.K. watermark, you may reveal it and put it into your hand. Otherwise, put it on your choice of the top or bottom of its owner's library.

: Saberclaw Golem gains first strike until end of turn.

Whenever Sabertooth Cobra deals damage to a player, that player gets a poison counter. The player gets another poison counter at the beginning of their next upkeep unless they pay before that step. (A player with ten or more poison counters loses the game.)

Trample, protection from blue and from red

Flying, first strike

, : Sacellum Archers deals 2 damage to target attacking or blocking creature.

Other Snake creatures you control get +0/+1.

Shamans you control have ": Add ."

Prevent the next 3 damage that would be dealt to target creature this turn. At the beginning of the next end step, put a +0/+1 counter on that creature for each 1 damage prevented this way.

Return up to two target cards with cycling from your graveyard to your hand.

(: Add or .)

As Sacred Foundry enters, you may pay 2 life. If you don't, it enters tapped.

, Sacrifice Sacred Guide: Reveal cards from the top of your library until you reveal a white card. Put that card into your hand and exile all other cards revealed this way.

At the beginning of your upkeep, sacrifice Sacred Mesa unless you sacrifice a Pegasus.

: Create a 1/1 white Pegasus creature token with flying.

(: Add or .)

Sacred Peaks enters tapped.

Discard any number of cards. Creatures you control get +0/+1 until end of turn for each card discarded this way.

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

A person outside the game chooses an attacking or blocking creature target opponent controls. That player sacrifices that creature.

Saddled Rimestag gets +2/+2 as long as you had another creature enter the battlefield under your control this turn.

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

Search target player's library for up to three cards, exile them, then that player shuffles. If this spell was kicked, instead search that player's library for up to fifteen cards, exile them, then that player shuffles.

Menace

At the beginning of your end step, if you have the initiative, create a Treasure token. Create three of those tokens instead if you've completed a dungeon.

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

, : Safehold Sentry gets +0/+2 until end of turn. ( is the untap symbol.)

Sacrifice Saffi Eriksdotter: When target creature is put into your graveyard this turn, return that card to the battlefield.

When Sage of Epityr enters, look at the top four cards of your library, then put them back in any order.

Constellation — Whenever an enchantment you control enters, target player mills two cards.

Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)

Whenever Sage-Eye Avengers attacks, you may return target creature to its owner's hand if its power is less than Sage-Eye Avengers's power.

Enchant creature

When Sage's Reverie enters, draw a card for each Aura you control that's attached to a creature.

Enchanted creature gets +1/+1 for each Aura you control that's attached to a creature.

When Sage's Row Savant enters, scry 2.

Reach (This creature can block creatures with flying.)

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

+1: Scry 1. Saheeli Rai deals 1 damage to each opponent.

−2: Create a token that's a copy of target artifact or creature you control, except it's an artifact in addition to its other types. That token gains haste. Exile it at the beginning of the next end step.

−7: Search your library for up to three artifact cards with different names, put them onto the battlefield, then shuffle.

Whenever you cast a noncreature spell, create a 1/1 colorless Servo artifact creature token.

−2: Target artifact you control becomes a copy of another target artifact or creature you control until end of turn, except it's an artifact in addition to its other types.

Choose one or both —

• Create a token that's a copy of target artifact.

• Create a token that's a copy of target creature, except it's an artifact in addition to its other types.

Flying

When Saheeli's Silverwing enters, look at the top card of target opponent's library.

Flash

Backup 1 (When this creature enters, put a +1/+1 counter on target creature. If that's another creature, it gains the following ability until end of turn.)

Hexproof

Channel — , Discard Saiba Trespassers: Tap up to two target creatures you don't control. Those creatures don't untap during their controller's next untap step.

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