All Cats you control are Dogs in addition to their other types.

All Dogs you control are Cats in addition to their other types.

Cats and Dogs you control have haste.

Survival — At the beginning of your second main phase, if Rip, Spawn Hunter is tapped, reveal the top X cards of your library, where X is its power. Put any number of creature and/or Vehicle cards with different powers from among them into your hand. Put the rest on the bottom of your library in a random order.

Haste

Whenever Risona, Asari Commander deals combat damage to a player, if it doesn't have an indestructible counter on it, put an indestructible counter on it.

Whenever combat damage is dealt to you, remove an indestructible counter from Risona.

Flying

Whenever Rith, the Awakener deals combat damage to a player, you may pay . If you do, choose a color, then create a 1/1 green Saproling creature token for each permanent of that color.

: Add .

Meet in Reverse — You draw cards from the bottom of your library rather than the top.

Spoilers — Whenever an opponent scries, surveils, or searches their library, put a +1/+1 counter on River Song. Then River Song deals damage to that player equal to its power.

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 end step, each player exiles the top card of their library. Until your next end step, each player may play the card they exiled this way.

Whenever a player plays a land from exile or casts a spell from exile, you put a +1/+1 counter on target creature and create a Food token. (It's an artifact with ", , Sacrifice this artifact: You gain 3 life.")

: Add for each Forest you control.

At the beginning of your upkeep, you may pay . If you don't, tap Rohgahh of Kher Keep and all creatures named Kobolds of Kher Keep, then an opponent gains control of them.

Creatures you control named Kobolds of Kher Keep get +2/+2.

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.

, 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.

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 . 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.

+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.

Instant and sorcery spells you cast cost less to cast.

+1: Rowan, Scholar of Sparks deals 1 damage to each opponent. If you've drawn three or more cards this turn, she deals 3 damage to each opponent instead.

−4: You get an emblem with "Whenever you cast an instant or sorcery spell, you may pay . If you do, copy that spell. 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.

You may choose not to untap Rubinia Soulsinger during your untap step.

: Gain control of target creature for as long as you control Rubinia and Rubinia remains tapped.

All Hounds are Dogs. (We'll errata this to be true.)

First strike, lifelink

Underdog — If you've lost a game this match, CARDNAME and other Dogs you control get +1/+1.

As Rukarumel, Biologist enters, choose a creature type.

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

, : Create a 1/1 colorless Sliver creature token.

Whenever you cast a creature spell with mana value 5 or greater, that creature enters with X additional +1/+1 counters on it, where X is its mana value minus 4.

Creatures you control with three or more +1/+1 counters on them have haste.

: Add .

Prevent all damage that would be dealt to creatures you control.

Vigilance, reach

Ruric Thar, the Unbowed attacks each combat if able.

Whenever a player casts a noncreature spell, Ruric Thar deals 6 damage to that player.

Whenever Ruxa, Patient Professor enters or attacks, return target creature card with no abilities from your graveyard to your hand.

Creatures you control with no abilities get +1/+1.

For each creature you control with no abilities, you may have that creature assign its combat damage as though it weren't blocked.

Flying

When Ryusei, the Falling Star dies, it deals 5 damage to each creature without flying.

Menace

At the beginning of your end step, if you have the initiative, create a Treasure token. Create three of those tokens instead if you've completed a dungeon.

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

+1: Scry 1. Saheeli Rai deals 1 damage to each opponent.

−2: Create a token that's a copy of target artifact or creature you control, except it's an artifact in addition to its other types. That token gains haste. Exile it at the beginning of the next end step.

−7: Search your library for up to three artifact cards with different names, put them onto the battlefield, then shuffle.

Whenever you cast a noncreature spell, create a 1/1 colorless Servo artifact creature token.

−2: Target artifact you control becomes a copy of another target artifact or creature you control until end of turn, except it's an artifact in addition to its other types.

, : Create a token that's a copy of another target creature or artifact you control, except it's an artifact in addition to its other types. It gains haste. Sacrifice it at the beginning of the next end step.

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.

You may have Sakashima the Impostor enter as a copy of any creature on the battlefield, except its name is Sakashima the Impostor, it's legendary in addition to its other types, and it has ": Return this creature to its owner's hand at the beginning of the next end step."

You may cast creature spells as though they had flash.

Whenever one or more other creatures you control leave the battlefield, investigate. This ability triggers only once each turn. (Create a Clue token. It's an artifact with ", Sacrifice this artifact: Draw a card.")

+1: Up to one target creature gains double strike until end of turn.

−2: Samut, the Tested deals 2 damage divided as you choose among one or two targets.

−7: Search your library for up to two creature and/or planeswalker cards, put them onto the battlefield, then shuffle.

First strike, vigilance, haste

Whenever a creature you control deals combat damage to a player, if that creature entered this turn, draw a card.

Whenever another nontoken creature you control enters, create a Food token. (It's an artifact with ", , Sacrifice this artifact: You gain 3 life.")

Sacrifice three Foods: Return target historic card from your graveyard to your hand. (Artifacts, legendaries, and Sagas are historic.)

At the beginning of your upkeep, you may search your library and/or graveyard for a Shrine card and put it onto the battlefield. If you search your library this way, shuffle.

If an ability of another Shrine you control triggers while you control six or more Shrines, that ability triggers an additional time.

At the beginning of your first main phase, add X mana of any one color, where X is the number of Shrines you control.

At the beginning of your first main phase, each opponent loses X life and you gain X life, where X is the number of Shrines you control.

: Tap target creature. This ability costs less to activate for each Shrine you control.

Indestructible

Whenever Sapling of Colfenor attacks, reveal the top card of your library. If it's a creature card, you gain life equal to that card's toughness, lose life equal to its power, then put it into your hand.

Whenever you cast a historic spell, investigate. This ability triggers only once each turn. (Artifacts, legendaries, and Sagas are historic. To investigate, create a Clue token. It's an artifact with ", Sacrifice this artifact: Draw a card.")

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

0: Reveal the top card of your library and put it into your hand. Sarkhan the Mad deals damage to himself equal to that card's mana value.

−2: Target creature's controller sacrifices it, then that player creates a 5/5 red Dragon creature token with flying.

−4: Each Dragon creature you control deals damage equal to its power to target player or planeswalker.

+1: Draw a card, then add one mana of any color.

−2: Create a 4/4 red Dragon creature token with flying.

−8: Search your library for any number of Dragon creature cards, put them onto the battlefield, then shuffle.

+2: Sarkhan, Dragonsoul deals 1 damage to each opponent and each creature your opponents control.

−3: Sarkhan, Dragonsoul deals 4 damage to target player or planeswalker.

−9: Search your library for any number of Dragon creature cards, put them onto the battlefield, then shuffle.

Dragon spells you cast cost less to cast.

Whenever a Dragon you control enters, you may have Sarkhan, Soul Aflame become a copy of it until end of turn, except its name is Sarkhan, Soul Aflame and it's legendary in addition to its other types.

+1: Dragon cards in your hand perpetually gain "This spell costs less to cast", and "You may pay rather than pay this spell's mana cost, where X is its mana value."

0: Conjure a card named Shivan Dragon into your hand.

−2: Sarkhan, Wanderer to Shiv deals 3 damage to target creature.