Echo {3}{W} (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)

When Radiant’s Dragoons enters the battlefield, you gain 5 life.

Flash

Flying

You may cast historic spells as though they had flash. (Artifacts, legendaries, and Sagas are historic.)

When Raffine’s Informant enters the battlefield, it connives. (Draw a card, then discard a card. If you discarded a nonland card, put a +1/+1 counter on this creature.)

When Raffine’s Silencer enters the battlefield, it connives. (Draw a card, then discard a card. If you discarded a nonland card, put a +1/+1 counter on this creature.)

When Raffine’s Silencer dies, target creature an opponent controls gets -X/-X until end of turn, where X is Raffine’s Silencer’s power.

Whenever you cast an instant or sorcery spell, you may tap two untapped creatures you control. If you do, draw a card.

{3}{W}{W}: Creatures you control get +1/+1 and gain vigilance until end of turn.

Exalted (Whenever a creature you control attacks alone, that creature gets +1/+1 until end of turn.)

Whenever a creature you control attacks alone, it gains double strike until end of turn.

{2}{B}, {T}: Exile up to three target cards from a single graveyard.

Whenever another creature dies, Rage Thrower deals 2 damage to target player or planeswalker.

{2}: Target black or green creature gains haste until end of turn. (It can attack and {T} this turn.)

Each creature you control with a mana ability gets +2/+2.

Whenever a creature you control with a mana ability attacks, untap it.

Whenever you cast a spell, if at least seven mana was spent to cast it, untap target creature. It gets +7/+7 and gains trample until end of turn.

At the beginning of your end step, if you discarded a card this turn, transform Ragged Recluse.

Whenever Odious Witch attacks, defending player loses 1 life and you gain 1 life.

{B}{B}{B}, {T}: Target opponent reveals their hand and discards a creature card at random. Activate only during your turn.

{G}{W}{U}, {T}: Regenerate target creature.

First strike

When Rahilda, Wanted Cutthroat deals combat damage to a player, exile a nonland card from their library at random. During any turn you attacked with a Wolf or Werewolf, you may cast that card and you may spend mana as though it were mana of any color to cast that spell.

Daybound

Double strike

When Rahilda, Feral Outlaw deals combat damage to a player, exile a nonland card from their library at random. During any turn you attacked with a Wolf or Werewolf, you may cast that card and you may spend mana as though it were mana of any color to cast that spell.

Nightbound

First strike

Whenever a Samurai or Warrior you control attacks alone, untap it. If it’s the first combat phase of the turn, there is an additional combat phase after this phase.

First strike

{T}: Reveal your hand and discard a card of target opponent’s choice. Then that player reveals their hand and discards a card of your choice. Activate only as a sorcery.

When Rakdos Firewheeler enters the battlefield, it deals 2 damage to target opponent and 2 damage to up to one target creature or planeswalker.

Haste

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

{3}{R}: Rakdos Trumpeter gets +2/+0 until end of turn.

Haste

{R}, {T}: Create a 3/1 red Elemental creature token with haste.

First strike

When Ramirez DePietro, Pillager enters the battlefield, you lose 2 life and create two Treasure tokens.

Whenever one or more Pirates you control deal combat damage to a player, exile the top card of that player’s library. You may cast that card for as long as it remains exiled.

First strike

{5}, {T}: Search your library for a Rebel permanent card with mana value 4 or less, put it onto the battlefield, then shuffle.

{6}, {T}: Search your library for a Rebel permanent card with mana value 5 or less, put it onto the battlefield, then shuffle.

{4}, {T}: Search your library for a Rebel permanent card with mana value 3 or less, put it onto the battlefield, then shuffle.

{6}, {T}: Return target Rebel permanent card with mana value 5 or less from your graveyard to the battlefield.

{3}, {T}: Search your library for a Rebel permanent card with mana value 2 or less, put it onto the battlefield, then shuffle.

Flying

{7}, {T}: Search your library for a Rebel permanent card with mana value 6 or less, put it onto the battlefield, then shuffle.

Deathtouch

Other Assassins you control get +1/+1.

Whenever a player loses the game, if they were attacked this turn by an Assassin you controlled, you win the game.

{T}: Destroy target enchanted creature.

When Ranger-Captain of Eos enters the battlefield, you may search your library for a creature card with mana value 1 or less, reveal it, put it into your hand, then shuffle.

Sacrifice Ranger-Captain of Eos: Your opponents can’t cast noncreature spells this turn.

First strike

{G}: Regenerate Ranger en-Vec.

When Ranger of Eos enters the battlefield, you may search your library for up to two creature cards with mana value 1 or less, reveal them, put them into your hand, then shuffle.

Vigilance

When Rangers of Ithilien enters the battlefield, gain control of up to one target creature with lesser power for as long as you control Rangers of Ithilien. Then the Ring tempts you.

Flying

{2}{W}: Rappelling Scouts gains protection from the color of your choice until end of turn.

Specialize {5}

When Rasaad, Monk of Selûne enters the battlefield, exile target creature an opponent controls until this creature leaves the battlefield.

Each creature you control assigns combat damage equal to its toughness rather than its power.

Whenever Rasaad yn Bashir attacks, if you have the initiative, double the toughness of each creature you control until end of turn.

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

{T}: Destroy target attacking or blocking Dragon. It can’t be regenerated. You gain life equal to its power.

Reach (This creature can block creatures with flying.)

Whenever Rashka the Slayer blocks one or more black creatures, Rashka gets +1/+2 until end of turn.

Rasputin Dreamweaver enters the battlefield with seven dream counters on it.

Remove a dream counter from Rasputin: Add {C}.

Remove a dream counter from Rasputin: Prevent the next 1 damage that would be dealt to Rasputin this turn.

At the beginning of your upkeep, if Rasputin started the turn untapped, put a dream counter on it.

Rasputin can’t have more than seven dream counters on it.

When Rasputin, the Oneiromancer enters the battlefield, put a dream counter on it for each opponent you have. Each opponent creates a 1/1 red Goblin creature token.

{T}, Remove one or more dream counters from Rasputin: Add that much {C}.

{T}, Remove a dream counter from Rasputin: Create a 2/2 white Knight creature token with protection from red.

As long as it’s your turn, Ratcatcher Trainee has first strike.

Create two 1/1 black Rat creature tokens with “This creature can’t block.” (Then exile this card. You may cast the creature later from exile.)

{B}, {T}: Tap target creature.

{T}: Add {G}, {U}, or {R}.

Morph {2} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)

When Rattleclaw Mystic is turned face up, add {G}{U}{R}.

When Ravaging Horde enters the battlefield, destroy target land.

Morph—Return a Bird you control to its owner’s hand. (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)

Whenever Raven Guild Master deals combat damage to a player, that player exiles the top ten cards of their library.

Morph {2}{U}{U} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)

When Ravenloft Adventurer enters the battlefield, you take the initiative.

If a creature an opponent controls would die, instead exile it and put a hit counter on it.

Whenever Ravenloft Adventurer attacks, if you’ve completed a dungeon, defending player loses 1 life for each card they own in exile with a hit counter on it.

Flying

Other creatures you control get +1/+1.

At the beginning of your upkeep, you may return target creature card from your graveyard to your hand.

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

Whenever you or a permanent you control becomes the target of a spell or ability an opponent controls, you may draw a card. You may draw an additional card if Rayne, Academy Chancellor is enchanted.

Whenever you cast your second spell each turn, put a +1/+1 counter on Razzle-Dazzler. It can’t be blocked this turn.

Artifacts you control have protection from each mana value among artifacts you control.

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

Rebel Informer can’t be the target of white spells or abilities from white sources.

{3}: Put target nontoken Rebel on the bottom of its owner’s library.

Vigilance

Threshold — As long as seven or more cards are in your graveyard, Reborn Hero has “When Reborn Hero dies, you may pay {W}{W}. If you do, return Reborn Hero to the battlefield under your control.”

Reckless Cohort attacks each combat if able unless you control another Ally.

{1}{R}: Reckless Embermage deals 1 damage to any target and 1 damage to itself.

Whenever an artifact enters the battlefield under your control, Reckless Fireweaver deals 1 damage to each opponent.

First strike

Whenever Reckless Racer becomes tapped, you may discard a card. If you do, draw a card.

{T}: Target player draws a card, then discards a card.

At the beginning of combat on your turn, target creature you control gets +1/+0 and gains haste until end of turn.

Daybound (If a player casts no spells during their own turn, it becomes night next turn.)

At the beginning of combat on your turn, target creature you control gets +2/+0 and gains trample and haste until end of turn.

Nightbound (If a player casts at least two spells during their own turn, it becomes day next turn.)