Menace

: Spells you cast this turn that are black and/or red cost less to cast, where X is the amount of life you lost this turn. Activate only as a sorcery.

When Rowan's Stalwarts enters the battlefield, you may search your library and/or graveyard for a card named Rowan, Fearless Sparkmage, reveal it, and put it into your hand. If you search your library this way, shuffle.

Whenever Roxanne, Starfall Savant enters the battlefield or attacks, create a tapped colorless artifact token named Meteorite with "When Meteorite enters the battlefield, it deals 2 damage to any target" and ": Add one mana of any color."

Whenever you tap an artifact token for mana, add one mana of any type that artifact token produced.

: Destroy target tapped creature.

, Exile the top card of your library: You gain 1 life.

Phalanx Commander — When Royal Warden enters the battlefield, create two tapped 2/2 black Necron Warrior artifact creature tokens.

Unearth (: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.)

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

Whenever Rubblebelt Braggart attacks, if it's not suspected, you may suspect it. (A suspected creature has menace and can't block.)

When Rubblebelt Maverick enters the battlefield, surveil 2. (Look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.)

, Exile Rubblebelt Maverick from your graveyard: Put a +1/+1 counter on target creature. Activate only as a sorcery.

Rubblebelt Recluse attacks each combat if able.

Rubblebelt Runner can't be blocked by creature tokens.

You may choose not to untap Rubinia Soulsinger during your untap step.

: Gain control of target creature for as long as you control Rubinia and Rubinia remains tapped.

Haste

Whenever Ruby, Daring Tracker attacks while you control a creature with power 4 or greater, Ruby gets +2/+2 until end of turn.

: Add or .

Flying

Whenever a player casts a spell, they lose 1 life for each spell they've cast this turn.

At the beginning of combat on your turn, choose an opponent at random. Ruhan of the Fomori attacks that player this combat if able.

, : Exile target land you control, then return it to the battlefield under your control.

When you cast this spell, you may put a card an opponent owns from exile into that player's graveyard. If you do, you gain 5 life.

Deathtouch

When Ruin Rat dies, exile target card from an opponent's graveyard.

When Ruination Rioter dies, you may have it deal damage to any target equal to the number of land cards in your graveyard.

Flying, lifelink

At the beginning of your end step, if you descended this turn, scry 1. (You descended if a permanent card was put into your graveyard from anywhere.)

Whenever Ruinous Minotaur deals damage to an opponent, sacrifice a land.

As Rukarumel, Biologist enters the battlefield, choose a creature type.

Slivers you control and nontoken creatures you control are the chosen type in addition to their other creature types. The same is true for creature spells you control and creature cards you own that aren't on the battlefield.

, : Create a 1/1 colorless Sliver creature token.

State-based actions don't apply to you or other permanents you control. (You don't lose the game due to having 0 or less life or drawing from an empty library. Your creatures aren't destroyed due to damage or deathtouch and aren't put into a graveyard due to having 0 or less toughness. Your planeswalkers aren't put into a graveyard if they have 0 loyalty. You don't put a legendary permanent into a graveyard if you control two with the same name. Counters aren't removed from your permanents due to game rules. Permanents you control attached or combined illegally remain on the battlefield. For complete rules and regulations, see rule 704.)

This spell costs less to cast for each land card in your graveyard.

Vigilance, reach, trample

When Rumbleweed enters the battlefield, other creatures you control get +3/+3 and gain trample until end of turn.

When Rumbling Ruin enters the battlefield, count the number of +1/+1 counters on creatures you control. Creatures your opponents control with power less than or equal to that number can't block this turn.

At the beginning of your upkeep, Rumbling Slum deals 1 damage to each player.

: Surveil 1. (Look at the top card of your library. You may put that card into your graveyard.)

Whenever you cast a creature spell with mana value 5 or greater, that creature enters the battlefield with X additional +1/+1 counters on it, where X is its mana value minus 4.

Creatures you control with three or more +1/+1 counters on them have haste.

: Add .

Whenever you cast a red spell, if Runaway Steam-Kin has fewer than three +1/+1 counters on it, put a +1/+1 counter on Runaway Steam-Kin.

Remove three +1/+1 counters from Runaway Steam-Kin: Add .

Other Goblins you control get +1/+1.

Whenever Rundvelt Hordemaster or another Goblin you control dies, exile the top card of your library. If it's a Goblin creature card, you may cast that card until the end of your next turn.

When Rune-Brand Juggler enters the battlefield, suspect up to one target creature you control. (A suspected creature has menace and can't block.)

, Sacrifice a suspected creature: Target creature gets -5/-5 until end of turn.

When Runeforge Champion enters the battlefield, you may search your library and/or graveyard for a Rune card, reveal it, and put it into your hand. If you search your library this way, shuffle.

You may pay rather than pay the mana cost for Rune spells you cast.

Flying

When Rune-Scarred Demon enters the battlefield, search your library for a card, put it into your hand, then shuffle.

Prevent all damage that would be dealt to creatures you control.

Whenever an opponent activates an ability of a creature or land that isn't a mana ability, you may draw a card.

Training (Whenever this creature attacks with another creature with greater power, put a +1/+1 counter on this creature.)

When Rural Recruit enters the battlefield, create a 3/1 green Boar creature token.

Warriors your team controls have haste.

Forestwalk (This creature can't be blocked as long as defending player controls a Forest.)

, , Discard a card: Regenerate target creature.

Reach, trample

//PRT-Prototype_Mech//

Prototype (You may cast this spell with different mana cost, color, and size. It keeps its abilities and types.)

3/5

Whenever Rust Scarab becomes blocked, you may destroy target artifact or enchantment defending player controls.

Rusted Sentinel enters the battlefield tapped.

Fading 5 <I>(This creature enters the battlefield with five fade counters on it. At the beginning of your upkeep, remove a fade counter from it. If you can't, sacrifice it.)</I>

Rusting Golem's power and toughness are each equal to the number of fade counters on it.

First strike

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

: 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.

, Sacrifice a creature: Create two Treasure tokens. (They're artifacts with ", Sacrifice this artifact: Add one mana of any color.")

Sacrifice three Treasures: Draw a card.

Squad—Exile four cards from your graveyard. (As an additional cost to cast this spell, you may pay its squad cost any number of times. When this creature enters the battlefield, create that many tokens that are copies of it.)

Menace (This creature can't be blocked except by two or more creatures.)