Haste

Whenever Rubblebelt Rioters attacks, it gets +X/+0 until end of turn, where X is the greatest power among creatures you control.

Rubblehulk's power and toughness are each equal to the number of lands you control.

Bloodrush — , Discard Rubblehulk: Target attacking creature gets +X/+X until end of turn, where X is the number of lands you control.

First strike

Red spells you cast cost more to cast.

All Hounds are Dogs. (We'll errata this to be true.)

First strike, lifelink

Underdog — If you've lost a game this match, CARDNAME and other Dogs you control get +1/+1.

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.)

Destroy all nonland permanents your opponents control.

As Rukarumel, Biologist enters, 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, other creatures you control get +3/+3 and gain trample until end of turn.

Rumbling Rockslide deals damage to target creature equal to the number of lands you control.

When Rumbling Sentry enters, scry 1.

, Discard a card: Draw a card.

One or two target creatures each gain haste until end of turn. They can't be blocked this turn except by creatures with haste.

Escape—, Exile four other cards from your graveyard. (You may cast this card from your graveyard for its escape cost.)

Whenever you cast a creature spell with mana value 5 or greater, that creature enters 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 .

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.

Enchant permanent

When Rune of Mortality enters, draw a card.

As long as enchanted permanent is a creature, it has deathtouch.

As long as enchanted permanent is an Equipment, it has "Equipped creature has deathtouch."

: The next time a blue source of your choice would deal damage to you this turn, prevent that damage.

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

Counter target spell unless its controller pays .

Draw a card.

When Rune-Brand Juggler enters, 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.

As Runed Halo enters, choose a card name.

You have protection from the chosen card name. (You can't be targeted, dealt damage, or enchanted by anything with that name.)

Instead of taking turns as normal, players take their phases sequentially. (For example, you take your beginning phase as the active player, then the next player in turn order becomes the active player and takes their beginning phase. After each player had a beginning phase, do the same for first main, combat phase, second main, ending phase, and then beginning phase again. If this creature leaves the battlefield, the active player continues their turn as normal.)

Flying

, Exile Runehorn Hellkite from your graveyard: Each player discards their hand, then draws seven cards.

When you have 30 or more life, flip Rune-Tail, Kitsune Ascendant.

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

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

Creatures you control get +2/+1 until end of turn. Warrior creatures you control gain lifelink until end of turn. (Damage dealt by those Warriors also causes their controller to gain that much life.)

Draw cards equal to the highest mana value among permanents you control.

Warriors your team controls have haste.

, , Discard a card: Regenerate target creature.

When Rusko, Clockmaker enters the battlefield, conjure a card named Midnight Clock onto the battlefield.

Whenever you cast a noncreature spell, put an hour counter on each permanent you control named Midnight Clock. Each opponent loses 1 life and you gain 1 life.

Flying

At the beginning of your upkeep, sacrifice an artifact other than Rust Elemental. If you can't, tap Rust Elemental and you lose 4 life.

Metalcraft — Rusted Relic is a 5/5 Golem artifact creature as long as you control three or more artifacts.

Sacrifice an artifact: Regenerate Rusted Slasher.

Fading 5 <I>(This creature enters 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.

Offspring (You may pay an additional as you cast this spell. If you do, when this creature enters, create a 1/1 token copy of it.)

This creature can't be blocked by creatures with power 2 or less.

: 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 Ryan attacks, exile cards from the top of your library until you exile a nonland card. You may cast the exiled card without paying its mana cost if it's a spell with mana value less than or equal to Ryan's power. Put the exiled cards not cast this way on the bottom of your library in a random order.

Doctor's companion (You can have two commanders if the other is the Doctor.)

: Saberclaw Golem gains first strike until end of turn.

At the beginning of your end step, if a creature died this turn, put a +1/+1 counter on Sabertooth Mauler and untap it.

: Reveal any number of creature cards with power 5 or greater from your hand. Add for each card revealed this way.

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

When Saddleback Lagac enters, support 2. (Put a +1/+1 counter on each of up to two other target creatures.)

Enchant creature

Whenever a creature dies, put a +1/+1 counter on enchanted creature.