Reveal the top three cards of your library and put one of them into your hand. You gain life equal to that card's mana value. Put all other cards revealed this way into your graveyard.

You may exert Rhet-Crop Spearmaster as it attacks. When you do, it gets +1/+0 and gains first strike until end of turn. (An exerted creature won't untap during your next untap step.)

Rhox Pummeler enters with a shield counter on it. (If it would be dealt damage or destroyed, remove a shield counter from it instead.)

Rhox Pummeler has trample as long as it has a shield counter on it.

Reach (This creature can block creatures with flying.)

If an opponent cast a blue spell this turn, you may pay rather than pay this spell's mana cost.

Change the target of target spell with a single target.

Flying (This creature can't be blocked except by creatures with flying or reach.)

When Riddlemaster Sphinx enters, you may return target creature an opponent controls to its owner's hand.

Before drawing your hand, you may start the game with CARDNAME in your opening hand. If you do, draw one fewer card. (Mulligans continue as normal.)

CARDNAME enters the battlefield tapped.

: Add .

When Riftsweeper enters, choose target face-up exiled card. Its owner shuffles it into their library.

Deathtouch

When Rilsa Rael, Kingpin enters, you take the initiative.

Whenever you attack, target attacking creature gains deathtouch until end of turn. If you've completed a dungeon, that creature also gets +5/+0 and gains first strike and menace until end of turn.

Whenever you cast a Dog spell, create a 1/1 green Cat creature token.

Whenever you cast a Cat spell, create a 1/1 white Dog creature token.

, : Rin and Seri, Inseparable deals damage to any target equal to the number of Dogs you control. You gain life equal to the number of Cats you control.

Flying

When Ringskipper dies, clash with an opponent. If you win, return Ringskipper to its owner's hand. (Each clashing player reveals the top card of their library, then puts that card on the top or bottom. A player wins if their card had a higher mana value.)

( can be paid with either or .)

Enchant creature

Enchanted creature gets +2/-1.

Destroy target tapped creature. (Then exile this card. You may cast the creature later from exile.)

Trample

When Riparian Tiger enters, you get (two energy counters).

Whenever Riparian Tiger attacks, you may pay . If you do, it gets +2/+2 until end of turn.

Haste

Enrage — Whenever Ripjaw Raptor is dealt damage, draw a card.

At the beginning of your first main phase, mill three cards. Then you may pay and 3 life. If you do, put a card from among those cards into your hand.

Tap all blue creatures.

Flying

At the beginning of your upkeep, return an enchantment you control to its owner's hand.

Vigilance

When Riptide Crab dies, draw a card.

Whenever Riptide Entrancer deals combat damage to a player, you may sacrifice it. If you do, gain control of target creature that player controls. (This effect lasts indefinitely.)

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

: Change Riptide Mangler's base power to target creature's power. <I>(This effect lasts indefinitely.)</I>

As Riptide Replicator enters, choose a color and a creature type.

Riptide Replicator enters with X charge counters on it.

, : Create an X/X creature token of the chosen color and type, where X is the number of charge counters on Riptide Replicator.

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 Riptide Survivor is turned face up, discard two cards, then draw three cards.

Whenever you cast a kicked spell, Risen Riptide has base power and toughness 5/5 until end of turn.

When Rishadan Cutpurse enters, each opponent sacrifices a permanent unless they pay .

, : Shuffle target nontoken permanent you control into its owner's library.

When Rishkar, Peema Renegade enters, put a +1/+1 counter on each of up to two target creatures.

Each creature you control with a counter on it has ": Add ."

Whenever another creature or planeswalker you control dies, put a +1/+1 counter on Rising Populace.

Whenever a creature you control is dealt damage, put a +1/+1 counter on it. (It must survive the damage to get the counter.)

Destroy target creature. If that creature had a +1/+1 counter on it, create a 1/1 green Snake creature token.

Discard any number of cards. Search your library for up to that many basic land cards, reveal them, put them into your hand, then shuffle.

Creatures you control get +1/+1 until end of turn.

Coven — If you control three or more creatures with different powers, creatures you control get +2/+1 until end of turn instead.

Whenever River Kelpie or another permanent enters from a graveyard, draw a card.

Whenever a player casts a spell from a graveyard, draw a card.

Persist (When this creature dies, if it had no -1/-1 counters on it, return it to the battlefield under its owner's control with a -1/-1 counter on it.)

: Add .

Menace

When Riveteers Provocateur enters the battlefield, choose a creature card in your hand without blitz. It perpetually gains blitz. The blitz cost is equal to its mana cost.

Blitz (If you cast this spell for its blitz cost, it gains haste and "When this creature dies, draw a card." Sacrifice it at the beginning of the next end step.)

Flying, trample

When Roalesk, Apex Hybrid enters, put two +1/+1 counters on another target creature you control.

When Roalesk dies, proliferate, then proliferate again. (Choose any number of permanents and/or players, then give each another counter of each kind already there. Then do it again.)

At the beginning of your upkeep, return a creature you control to its owner's hand.

: Rockcaster Platoon deals 2 damage to each creature with flying and each player.

Rocky Tar Pit enters tapped.

, Sacrifice Rocky Tar Pit: Search your library for a Swamp or Mountain card, put it onto the battlefield, then shuffle.

, : Rod of Spanking deals 1 damage to target player. Then untap Rod of Spanking unless that player says "Thank you, sir. May I have another?"

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

: 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.

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

Roil Eruption deals 3 damage to any target. If this spell was kicked, it deals 5 damage instead.

Rolling Hamsphere gets +1/+1 for each Hamster you control.

Whenever Rolling Hamsphere attacks, create three 1/1 red Hamster creature tokens, then it deals X damage to any target, where X is the number of Hamsters you control.

Crew 3

When Rona, Disciple of Gix enters, you may exile target historic card from your graveyard. (Artifacts, legendaries, and Sagas are historic.)

You may cast spells from among cards exiled with Rona.

, : Exile the top card of your library.

Ronom Serpent can't attack unless defending player controls a snow land.

When you control no snow lands, sacrifice Ronom Serpent.

Whenever one or more nontoken creatures you control deal combat damage to a player, create a 1/1 black Assassin creature token with menace. (It can't be blocked except by two or more creatures.)

Flying

Whenever Rooftop Saboteurs deals combat damage to a player or battle, draw a card.