: Add .

: Add . Spend this mana only to cast a creature spell.

, : Target Lizard, Mouse, Otter, or Raccoon you control gets +1/+0 and gains haste until end of turn. Activate only as a sorcery.

Double strike (This creature deals both first-strike and regular combat damage.)

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

First strike

Whenever another creature dies, you may put a +1/+1 counter on Rockslide Elemental.

Whenever a player casts an instant or sorcery spell, exile it instead of putting it into a graveyard as it resolves.

, , Sacrifice Rod of Absorption: You may cast any number of spells from among cards exiled with Rod of Absorption with total mana value X or less without paying their mana costs.

Whenever you cast your first spell each turn, add .

First strike, menace, trample

Partner (You can have two commanders if both have partner.)

When Rogue Elephant enters, sacrifice it unless you sacrifice a Forest.

Flying

At the beginning of your upkeep, put a wage counter on Rogue Skycaptain. You may pay for each wage counter on it. If you don't, remove all wage counters from Rogue Skycaptain and an opponent gains control of it.

: Add .

, : Target creature can't be blocked this turn.

Other Kobolds you control get +2/+2.

Whenever you cast a Kobold spell, you may pay . If you do, create a 4/4 red Dragon creature token with flying.

Whenever you cast a Dragon spell, create a 0/1 red Kobold creature token named Kobolds of Kher Keep.

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

When Rohirrim Lancer dies, the Ring tempts you.

Flying

Landfall — Whenever a land you control enters, you may gain control of target creature for as long as you control Roil Elemental.

Return up to two target creatures your opponents control to their owners' hands. Target player draws two cards.

Exchange control of two target permanents that share a permanent type.

Visit — Creatures you control get +2/+0 until end of turn.

Lights — 3, 6

Visit — Creatures you control get +2/+0 until end of turn.

Lights — 5, 6

Rolling Earthquake deals X damage to each creature without horsemanship and each player.

Vigilance

, : Create a tapped token that's a copy of target token that entered this turn.

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

Whenever you cast a legendary spell, untap Rona, Herald of Invasion.

: Draw a card, then discard a card.

: Transform Rona. Activate only as a sorcery. ( can be paid with either or 2 life.)

Trample

Whenever a source deals damage to Rona, Tolarian Obliterator, that source's controller exiles a card from their hand at random. If it's a land card, you may put it onto the battlefield under your control. Otherwise, you may cast it without paying its mana cost.

Bushido 2 (Whenever this creature blocks or becomes blocked, it gets +2/+2 until end of turn.)

Equipped creature gets +2/+1.

Whenever a creature you control enters, attach Ronin Warclub to that creature.

Equip (: Attach to target creature you control. Equip only as a sorcery.)

Flash

Flying, lifelink

When Rooftop Assassin enters, destroy target creature an opponent controls that was dealt damage this turn.

Casualty 1 (As you cast this spell, you may sacrifice a creature with power 1 or greater. When you do, copy this spell and you may choose a new target for the copy.)

Tap target creature. It doesn't untap during its controller's next untap step.

Draw a card.

Until end of turn, target creature gets +0/+2 and another target creature gets -2/-0.

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

When Roost of Drakes enters, if it was kicked, create a 2/2 blue Drake creature token with flying.

Whenever you cast a kicked spell, create a 2/2 blue Drake creature token 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.)

When Root Elemental is turned face up, you may put a creature card from your hand onto the battlefield.

Prevent all combat damage that would be dealt this turn.

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

Destroy target noncreature permanent. If you control a Treefolk, draw a card.

When Rooting Kavu dies, you may exile it. If you do, shuffle all creature cards from your graveyard into your library.

Lands you control and land cards in your library are basic.

: Rootwalla gets +2/+2 until end of turn. Activate only once each turn.

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

, Sacrifice Rootwater Diver: Return target artifact card from your graveyard to your hand.

: Gain control of target creature for as long as that creature is enchanted.

You may cast Aura spells with enchant creature as though they had flash.

When Rootweaver Druid enters, each opponent may search their library for up to three basic land cards. They each put one of those cards onto the battlefield tapped under your control and the rest onto the battlefield tapped under their control. Then each player who searched their library this way shuffles.

When Rope Line Attendant enters the battlefield, creature cards in your hand perpetually gain "When this creature enters the battlefield, create a 1/1 green and white Citizen creature token."

Partner with Amy Pond

First strike, lifelink

The Last Centurion — When you cast this spell from anywhere other than exile, exile it with three time counters on it. It gains suspend. Then investigate. (Create a Clue token. It's an artifact with ", Sacrifice this artifact: Draw a card.")

First strike

Raid — At end of combat on your turn, if you attacked this turn, create a Junk token for each opponent you attacked. (It's an artifact with ", Sacrifice this artifact: Exile the top card of your library. You may play that card this turn. Activate only as a sorcery.")

Whenever you sacrifice a Junk, add .

: Add one mana of any color.

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

Face-down creatures you control have menace.

Whenever a permanent you control is turned face up, you draw a card and you lose 1 life.

When Rosheen, Roaring Prophet enters, mill six cards. You may put a card with in its mana cost from among them into your hand.

: Reveal any number of cards with in their mana cost in your hand. Add for each card revealed this way. Spend this mana only on costs that contain .

Battle cry (Whenever this creature attacks, each other attacking creature gets +1/+0 until end of turn.)

Heroic — Whenever you cast a spell that targets Rosnakht, Heir of Rohgahh, create a 0/1 red Kobold creature token named Kobolds of Kher Keep.

Rot Farm Skeleton can't block.

, Mill four cards: Return Rot Farm Skeleton from your graveyard to the battlefield. Activate only as a sorcery.

Rotating Fireplace enters tapped with a time counter on it.

: Add an amount of equal to the number of time counters on Rotating Fireplace.

, : Time travel. Activate only as a sorcery. (For each suspended card you own and each permanent you control with a time counter on it, you may add or remove a time counter.)

Menace

Whenever Rotisserie Elemental deals combat damage to a player, put a skewer counter on Rotisserie Elemental. Then you may sacrifice it. If you do, exile the top X cards of your library, where X is the number of skewer counters on Rotisserie Elemental. You may play those cards this turn.

When Rottenheart Ghoul dies, target player discards a card.