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Mary O'Kill

~$0.20 low · ~$0.55 high

Multicolor. Legendary Creature — Human Villain

five generic manaone black or red mana

50 · R · ENWhat the codes mean

Mary O'Kill

The List (Unfinity Foil Edition) #50 · Illustrated by Simon Dominic

What is Mary O'Kill worth?

Cheapest copy

~$0.20

Foil · The List (Unfinity Foil Edition) #50

Buy on TCGplayer

Highest TCGplayer price

~$0.55

Foil · Unstable #138

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3 prices from $0.20 to $0.55. Every price is in the printings table below.

TCGplayer market prices in USD, updated October 14, 2026. Each price is for one printing and one finish.

Oracle text

one generic manaone black or red mana: Switch a Killbot or Mary O'Kill in your hand with one on the battlefield. (If a creature is tapped, the switched creature is tapped. The same is true for untapped, attacking, blocking, enchanted, equipped, and targeted. Any counters on a creature are on the switched creature instead.)

5/5

All 2 printings of Mary O'Kill

PrintingRarityNon-foilFoilCardmarket (EUR)My collection
Unstable #138
Unstable
ust #138· 2017rare· Cardmarket €0.14 · €0.65 foil
rare$0.22$0.55€0.14€0.65 foil

Prices are TCGplayer market prices in USD for each printing and finish, via Scryfall. They are a guide, not an appraisal.

Where to buy Mary O'Kill

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Card details

First printed
2017
Printings
2
Mana value
6
Artist
Simon Dominic

What the codes mean

The small print at the bottom of the The List (Unfinity Foil Edition) card (#50).

50 · R · EN

  • 50Collector number, as Scryfall lists it. The printed form can differ on promos and special products.
  • RRare
  • ENPrinted in English
  • ★Foil. On foil cards a star replaces the dot between the set code and the language code.

How to read a Magic card: every part and code, on real cards.

Card breakdown

The parts of Mary O'Kill, read from the The List (Unfinity Foil Edition) printing. How to read any Magic card.

Name
Mary O'Kill. Rules use the English name in every language.
Mana cost
five generic manaone black or red manaMana value 6: the total mana in the cost, colors ignored.
Type line
Legendary is a supertype. Creature is the card type. Human and Villain are subtypes, after the dash.
Text box
What the card does. Italic text in brackets is reminder text: it explains a rule and has no effect on the game.
Power / toughness
5/5: power is the combat damage it deals; toughness is how much damage destroys it.
Illustration
By Simon Dominic. The art has no effect on the game.
Set symbol
The List (Unfinity Foil Edition). Gold means rare.
Collector number
50 = collector number, as Scryfall lists it. The printed form can differ on promos and special products.
Rarity letter
R = rare
Language
EN = printed in English
Artist
Simon Dominic, after the paintbrush.
Copyright
Wizards of the Coast's copyright notice, with the year.
Holo stamp
The foil security stamp at the bottom center, on rares and mythic rares since 2014.

Rulings (3)

  1. 2018-01-19

    You can activate Mary O’Kill’s ability if it is in your hand.

  2. 2018-01-19

    Killbot is a creature type. There are several Killbots in the Unstable set.

  3. 2018-01-19

    For all intents and purposes, the exchanged card is taking the place of the original card. Whatever its doing, the state it’s in, whatever’s attached to it—all of it stays the same. It’s as if Mary O’Kill or one of the Killbots pulls off a mask to reveal they were actually the other one all along. Diabolical!

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