K-9, Mark I

K-9, Mark I card image

K-9, Mark I: Legendary Artifact Creature - Robot Dog, Doctor Who. MTG card printings, market prices, rulings, and format legality on Mana Grove.

Mana cost
{U}
Mana value
1
Type
Legendary Artifact Creature - Robot Dog
Colour identity
Blue (U)
Power / toughness
1/1
Rarity
Rare
Set
Doctor Who (WHO)
Released
2023-10-13
Collector number
47
Artist
Narendra Bintara Adi
Commander rank
3,402 (by how often it appears in Commander decks)
Keywords
Negative, Affirmative, Doctor's companion
Commander
Can be your commander

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About K-9, Mark I

K-9, Mark I is a Magic: The Gathering card, a rare blue legendary artifact creature from Doctor Who (WHO), a Commander product released in October 2023. It is collector number 47 in that set, with art by Narendra Bintara Adi. It costs {U} (one blue mana) to cast, for a mana value of 1. It is a 1/1 creature. Its colour identity is blue. It is legal in Legacy, Vintage, Commander, Duel Commander and Oathbreaker. Doctor Who is its only printing so far. It can be your commander. The latest aggregated market price for this printing is $3.04 (normal finish, as of 2026-11-02).

Card text

Negative - As long as K-9 is untapped, other legendary creatures you control have ward {1}.

Affirmative - {1}{U}, {T}: Target legendary creature can't be blocked this turn.

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

Market price

Latest aggregated market price for the normal finish of this printing: $3.04 (as of 2026-11-02).

The figure covers this printing only; other printings carry their own price on their own page.

Format legality

Legality of K-9, Mark I by format. Formats in which it is not legal are not listed.

LegacyLegal
VintageLegal
CommanderLegal
Duel CommanderLegal
OathbreakerLegal

Other printings of K-9, Mark I

The other printings are listed newest first, with the rarity and release year of each.

PrintingRarityYear
Doctor Who (WHO) #1128Rare2023
Doctor Who (WHO) #362Rare2023
Doctor Who (WHO) #537Rare2023
Doctor Who (WHO) #652Rare2023
Doctor Who (WHO) #953Rare2023

Official rulings

Seven official rulings apply to K-9, Mark I, newest first.

  • Although Doctor's companion is a new variant of the partner ability, the rules for partner have not otherwise changed. Notably, Time Lord Doctors and cards with Doctor's companion do not interact with cards which have another partner ability.
  • If something refers to your commander while you have two commanders, it refers to one of them of your choice. If you are instructed to perform an action on your commander (e.g. put it from the command zone into your hand due to Command Beacon), you choose one of your commanders at the time the effect happens.
  • If your Commander deck has two commanders, you can include only cards whose own color identities are also found in your commanders' combined color identities.
  • The Doctor's companion ability allows you to have two commanders if one has the ability and the other is a legendary creature that is a Time Lord Doctor and has no other creature types. Creatures with the changeling ability, for example, can't be a second commander this way.
  • Once the game begins, your two commanders are tracked separately. If you cast one, you won't have to pay an additional {2} the first time you cast the other. A player loses the game after having been dealt 21 combat damage from any one of them, not from both of them combined.
  • Both commanders start in the command zone, and the remaining 98 cards (or 58 cards in a Commander Draft game) of your deck are shuffled to become your library.
  • An effect that checks whether you control your commander is satisfied if you control one or both of your two commanders.

Similar cards

Other artifact creature cards with a blue colour identity, ranked by how often they appear in Commander decks.

In these precons

K-9, Mark I is in the decklist of these preconstructed Commander decks.

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