Jo Grant

Mana cost: {2}{W}
Type: Legendary Creature — Human Soldier
Power / toughness: 3 / 2
Set: Doctor Who #628 (rare)

Each historic card in your hand has cycling {2}{W}. ({2}{W}, Discard that card: Draw a card.)
Whenever you cycle a card, put a +1/+1 counter on Jo Grant.
Doctor's companion (You can have two commanders if the other is the Doctor.)

Jo Grant has 4 printings, first in Doctor Who (2023). EDHREC ranks it #16,500 among Commander cards. It appears most in Gavi, Nest Warden decks (726 on EDHREC). 1 public deck on TCG runs it. It has 7 official rulings.

Legality

commander: legal
legacy: legal
vintage: legal
pauper: not legal
modern: not legal
pioneer: not legal
standard: not legal
brawl: not legal

Public decks that run Jo Grant

Blast from the Past - Doctor Who, led by Sarah Jane Smith

Commanders that run Jo Grant most

Deck counts from EDHREC.

Gavi, Nest Warden: 726 decks
Greasefang, Okiba Boss: 679 decks
The Fourth Doctor // Sarah Jane Smith: 266 decks
Shaun & Rebecca, Agents: 185 decks
The Fourteenth Doctor: 21 decks
Loran, Disciple of History: 15 decks
Layla Hassan: 12 decks
Elena, Turk Recruit: 9 decks

Often played with Jo Grant

Cards that show up in the same decks on EDHREC.

Rulings

2023-10-13: 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.
2023-10-13: 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.
2023-10-13: 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.
2023-10-13: 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.
2023-10-13: 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.
2023-10-13: 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.
2023-10-13: An effect that checks whether you control your commander is satisfied if you control one or both of your two commanders.