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

When Rooting Moloch enters, exile target card with a cycling ability from your graveyard. Until the end of your next turn, you may play that card.

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

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

: Look at the top card of target player's library.

, Sacrifice Rootwire Amalgam: Create an X/X colorless Golem artifact creature token, where X is three times Rootwire Amalgam's power. It gains haste until end of turn. Activate only as a sorcery.

//PRT-Prototype_Mech//

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

2/3

Alliance — Whenever another creature you control enters, create a Treasure token if this is the first or second time this ability has resolved this turn. Otherwise, you may pay . When you do, Rose Room Treasurer deals X damage to any target.

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.

Whenever one or more creature cards leave your graveyard, Rot Farm Mortipede gets +1/+0 and gains menace and lifelink until end of turn.

Whenever another creature you control dies, put a +1/+1 counter on Rot Shambler.

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.

As an additional cost to cast this spell, you may sacrifice any number of nonland permanents. This spell costs less to cast for each permanent sacrificed this way.

Whenever Rottenmouth Viper enters or attacks, put a blight counter on it. Then for each blight counter on it, each opponent loses 4 life unless that player sacrifices a nonland permanent of their choice or discards a card.

Rough deals 2 damage to each creature without flying.

Strive — This spell costs more to cast for each target beyond the first.

Any number of target creatures each get +2/+0 and gain trample until end of turn.

Bargain (You may sacrifice an artifact, enchantment, or token as you cast this spell.)

If this spell was bargained, look at the top four cards of your library, then put up to two of them back on top of your library in any order and the rest into your graveyard.

You draw two cards and you lose 2 life.

Bloodrush — , Discard Rubblebelt Maaka: Target attacking creature gets +3/+3 until end of turn.

Red spells you cast cost less to cast.

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.

, Sacrifice Ruinous Gremlin: Destroy target artifact.

Destroy all nonland permanents your opponents control.

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

Whenever Rulik Mons, Warren Chief attacks, look at the top card of your library. If it's a land card, you may put it onto the battlefield tapped. If you didn't put a card onto the battlefield this way, create a 1/1 red Goblin creature token.

Whenever you cast a kicked spell, you may have Rumbling Aftershocks deal damage to any target equal to the number of times that spell was kicked.

At the beginning of your upkeep, you may put a verse counter on Rumbling Crescendo.

, Sacrifice Rumbling Crescendo: Destroy up to X target lands, where X is the number of verse counters on Rumbling Crescendo.

When Rumbling Ruin enters, 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.)

Target attacking creature gets +3/+3 and gains trample until end of turn.

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 .

Enchant permanent

When Rune of Might enters, draw a card.

As long as enchanted permanent is a creature, it gets +1/+1 and has trample.

As long as enchanted permanent is an Equipment, it has "Equipped creature gets +1/+1 and has trample."

When Runeforge Champion enters, 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.

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

Target creature gets +1/+0 and gains first strike until end of turn. If it's a Goblin or Orc, it also gains haste until end of turn.

Trample

At the beginning of your upkeep, you may put a +1/+1 counter on Rushwood Elemental.

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.

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.

Whenever Rustmouth Ogre deals combat damage to a player, you may destroy target artifact that player controls.

When Rustspore Ram enters, destroy target Equipment.

: Saberclaw Golem gains first strike until end of turn.

, : Sacellum Archers deals 2 damage to target attacking or blocking creature.

: Target creature gets +1/+0 until end of turn.

Saddled Rimestag gets +2/+2 as long as you had another creature enter the battlefield under your control this turn.

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

Search target player's library for up to three cards, exile them, then that player shuffles. If this spell was kicked, instead search that player's library for up to fifteen cards, exile them, then that player shuffles.

As an additional cost to cast this spell, reveal a Vampire card from your hand or pay .

Flying, lifelink

, Sacrifice an artifact: Draw a card.

When Sage of Shaila's Claim enters, you get (three energy counters).

If you would draw a card, instead reveal the top three cards of your library. Put all creature cards revealed this way into your hand and the rest on the bottom of your library in any order.

+1: Scry 1. You may tap an untapped artifact you control. If you do, draw a card.

−2: Create two 1/1 colorless Thopter artifact creature tokens with flying. They gain haste until end of turn.

−4: You get an emblem with "Artifact creatures you control get +1/+1" and "Artifact spells you cast cost less to cast."

Whenever you cast an artifact spell, create a 1/1 colorless Thopter artifact creature token with flying.

, Sacrifice two artifacts: Draw a card.

: Target creature gains flying until end of turn. Any player may activate this ability.

Whenever Saint Traft and Rem Karolus becomes tapped, create a 1/1 red Human creature token if this is the first time this ability has resolved this turn. If it's the second time, create a 1/1 blue Spirit creature token with flying. If it's the third time, create a 4/4 white Angel creature token with flying.

Whenever you cast a spell that has convoke, untap Saint Traft and Rem Karolus.