Bill Potts is a Magic: The Gathering card, a rare red legendary creature from Doctor Who (WHO), a Commander product released in October 2023. It is collector number 76 in that set, with art by Kieran Yanner. It costs {3}{R} (three generic and one red mana) to cast, for a mana value of 4. It is a 2/4 creature. Its colour identity is red. 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 $0.26 (normal finish, as of 2026-11-11).
Card text
Whenever you cast an instant or sorcery spell that targets only Bill Potts or activate an ability that targets only Bill Potts, copy that spell or ability. You may choose new targets for the copy. This ability triggers only once each 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: $0.26 (as of 2026-11-11).
The figure covers this printing only; other printings carry their own price on their own page.
Format legality
Legality of Bill Potts by format. Formats in which it is not legal are not listed.
The other printings are listed newest first, with the rarity and release year of each.
Printing
Rarity
Year
Doctor Who (WHO) #379
Rare
2023
Doctor Who (WHO) #681
Rare
2023
Doctor Who (WHO) #970
Rare
2023
Official rulings
The 8 most recent official rulings for Bill Potts, newest first.
The copy made by Bill's triggered ability is created on the stack, so it's not "cast" or "activated."
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.
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.
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.
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.
If the spell or ability that's copied has an X whose value was determined as it was cast, the copy will have the same value of X.
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 the spell or ability that's copied is modal (that is, it says "Choose one -" or the like), the copy will have the same mode or modes. You can't choose different ones.
Similar cards
Other creature cards with a red colour identity, ranked by how often they appear in Commander decks.