All creatures get +2/-2 until end of turn.

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.

Whenever you cast an instant or sorcery spell, each opponent loses 1 life.

You may cast Rona, Sheoldred's Faithful from your graveyard by discarding two cards in addition to paying its other costs.

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

Return target creature or planeswalker you don't control to its owner's hand. If this spell was kicked, put that permanent on the bottom of its owner's library instead.

Haste

Bushido 1 (Whenever this creature blocks or becomes blocked, it gets +1/+1 until end of turn.)

: Roofstalker Wight gains flying until end of turn.

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.

Vigilance, trample

, : Exile another target creature. Return that card to the battlefield under its owner's control at the beginning of the next end step.

Mercenaries don't untap during their controllers' untap steps.

Artifacts and lands enter tapped.

Rootbound Crag enters tapped unless you control a Mountain or a Forest.

: Add or .

Choose three. You may choose the same mode more than once.

• Put two +1/+1 counters on target creature.

• Create a token that's a copy of target token you control.

• Target player creates a 1/1 green Squirrel creature token.

• Target opponent sacrifices a nontoken artifact of their choice.

, Return Rootha, Mercurial Artist to its owner's hand: Copy target instant or sorcery spell you control. You may choose new targets for the copy.

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for or one mana of that creature's color.)

Tap two untapped creatures you control: Root-Kin Ally gets +2/+2 until end of turn.

: Add .

, : Add one mana of any color.

Sacrifice a Forest: Regenerate Rootwater Alligator.

: Add .

: Add or . Rootwater Depths doesn't untap during your next untap step.

: Rootwater Hunter deals 1 damage to any target.

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

: Rootwater Thief gains flying until end of turn.

Whenever Rootwater Thief deals combat damage to a player, you may pay . If you do, search that player's library for a card and exile it, then the player shuffles.

, 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

Flying, haste

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.

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for or one mana of that creature's color.)

Vigilance

When Rosethorn Halberd enters, attach it to target non-Human creature you control.

Equipped creature gets +2/+1.

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

: Add . Spend this mana only on costs that contain .

When Rosie Cotton of South Lane enters, create a Food token. (It's an artifact with ", , Sacrifice this artifact: You gain 3 life.")

Whenever you create a token, put a +1/+1 counter on target creature you control other than Rosie.

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.

When Rotfeaster Maggot enters, exile target creature card from a graveyard. You gain life equal to that card's toughness.

Whenever Rotlung Reanimator or another Cleric dies, create a 2/2 black Zombie creature token.

Exploit (When this creature enters, you may sacrifice a creature.)

When Rot-Tide Gargantua exploits a creature, each opponent sacrifices a creature of their choice.

Whenever Rotting Giant attacks or blocks, sacrifice it unless you exile a card from your graveyard.

When Rotting Rats enters, each player discards a card.

Unearth (: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.)

Reach

, Exile a creature card from your graveyard: Create a 1/2 green Spider creature token with reach, then each opponent loses 1 life for each Spider you control.

Add for each card in target opponent's hand. Until end of turn, you don't lose this mana as steps and phases end. Exile Rousing Refrain with three time counters on it.

Suspend 3— (Rather than cast this card from your hand, you may pay and exile it with three time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, you may cast it without paying its mana cost.)

+2: During target player's next turn, each creature that player controls attacks if able.

−2: Rowan Kenrith deals 3 damage to each tapped creature target player controls.

−8: Target player gets an emblem with "Whenever you activate an ability that isn't a mana ability, copy it. You may choose new targets for the copy."

Partner with Will Kenrith

Rowan Kenrith can be your commander.

+1: Up to one target creature gets +3/+0 and gains first strike until end of turn.

−2: Rowan, Fearless Sparkmage deals 1 damage to each of up to two target creatures. Those creatures can't block this turn.

−9: Gain control of all creatures until end of turn. Untap them. They gain haste until end of turn.

Menace

: Spells you cast this turn that are black and/or red cost less to cast, where X is the amount of life you lost this turn. Activate only as a sorcery.

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.

Enchant planeswalker

Enchanted planeswalker has "+1: Up to one target creature gets +2/+0 and gains first strike and trample until end of turn."

Whenever you activate a loyalty ability of enchanted planeswalker, copy that ability. You may choose new targets for the copy.

Whenever Roxanne, Starfall Savant enters or attacks, create a tapped colorless artifact token named Meteorite with "When Meteorite enters, it deals 2 damage to any target" and ": Add one mana of any color."

Whenever you tap an artifact token for mana, add one mana of any type that artifact token produced.

: Destroy target tapped creature.

Flying

Target creature you control gains hexproof until end of turn. Create a Royal Role token attached to that creature. (If you control another Role on it, put that one into the graveyard. Enchanted creature gets +1/+1 and has ward .)

Phalanx Commander — When Royal Warden enters, create two tapped 2/2 black Necron Warrior artifact creature tokens.

Unearth (: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.)

Hexproof (This creature can't be the target of spells or abilities your opponents control.)

Whenever Rubblebelt Braggart attacks, if it's not suspected, you may suspect it. (A suspected creature has menace and can't block.)