Madame Vastra — ruling 1

Food is an artifact type. Even though it appears on some creatures, it's never a creature type.

Madame Vastra — ruling 2

You can't sacrifice a Food to pay multiple costs. For example, you can't sacrifice a Food token to activate its own ability and also to activate Maraleaf Rider's ability.

Madame Vastra — ruling 3

Whatever you do, don't eat the delicious cards.

Madame Vastra — ruling 4

If Madame Vastra is blocking or being blocked by another creature and both of those creatures are dealt lethal combat damage at the same time, they each die at the same time and the last ability will trigger.

Madame Vastra — ruling 5

Note that the target player searches their library (which may be affected by effects such as that of Stranglehold) and that the card they find is revealed, even though these words aren't included in the ability's reminder text.

Madame Vastra — ruling 6

"Partner with [name]" represents two abilities. The first is a triggered ability: "When this permanent enters the battlefield, target player may search their library for a card named [name], reveal it, put it into their hand, then shuffle."

Madame Vastra — ruling 7

The second ability represented by the "partner with [name]" keyword modifies the rules for deck construction in the Commander variant and has no function outside of that variant. If a legendary creature card with "partner with [name]" is designated as your commander, the named legendary creature card can also be designated as your commander.

Madame Vastra : règles, fonctionnement et interactions (MTG)

Madame Vastra is one of those cards players keep asking about. Here is, in plain words, what its official text says, the rulings published by Wizards of the Coast, and the combos players actually run.

Official card text

Partner with Jenny Flint (When this creature enters, target player may put Jenny Flint into their hand from their library, then shuffle.) Madame Vastra must be blocked if able. Whenever a creature dealt damage by Madame Vastra this turn dies, create a Clue token and a Food token.

How it works : Madame Vastra

Original English text — Wizards of the Coast / Scryfall

#1November 8, 2024· Wizards of the Coast
Food is an artifact type. Even though it appears on some creatures, it's never a creature type.
Card named in this ruling
Food
#2November 8, 2024· Wizards of the Coast
You can't sacrifice a Food to pay multiple costs. For example, you can't sacrifice a Food token to activate its own ability and also to activate Maraleaf Rider's ability.
Card named in this ruling
Food
#3November 8, 2024· Wizards of the Coast
Whatever you do, don't eat the delicious cards.
No other card is named in this ruling.
#4October 13, 2023· Wizards of the Coast
If Madame Vastra is blocking or being blocked by another creature and both of those creatures are dealt lethal combat damage at the same time, they each die at the same time and the last ability will trigger.
No other card is named in this ruling.
#5October 13, 2023· Wizards of the Coast
Note that the target player searches their library (which may be affected by effects such as that of Stranglehold) and that the card they find is revealed, even though these words aren't included in the ability's reminder text.
No other card is named in this ruling.
#6October 13, 2023· Wizards of the Coast
"Partner with [name]" represents two abilities. The first is a triggered ability: "When this permanent enters the battlefield, target player may search their library for a card named [name], reveal it, put it into their hand, then shuffle."
No other card is named in this ruling.
#7October 13, 2023· Wizards of the Coast
The second ability represented by the "partner with [name]" keyword modifies the rules for deck construction in the Commander variant and has no function outside of that variant. If a legendary creature card with "partner with [name]" is designated as your commander, the named legendary creature card can also be designated as your commander.
No other card is named in this ruling.

Interactions with other cards

These cards' text mentions Madame Vastra.

Jenny Flint

Partner with Madame Vastra First strike Training (Whenever this creature attacks with another creature with greater power, put a +1/+1 counter on this creature.) Whenever you sacrifice a Clue or Food, put a +1/+1 counter on another target creature you control.