Mary O'Kill
USTUnstable/#138/2017Rare
Colour IDMV 6
Current paper retail
Card Kingdom$0.49
Cardmarket€0.10
ManaPool$0.15
TCGplayer$0.17
Paper retail history (USD)
3 providers
Latest $0.49High $0.49Low $0.49▲ 0.0%
Market and collecting
Market overview
$0.17TCGplayer, USD, retail, nonfoil
Latest observation: 2026-11-10
7d▲ 0.0%30d▼ 19.1%90d▼ 22.7%
90d high
$0.22
90d low
$0.17
Paper printings priced
2
Currently 2nd
Cheapest paper printing
$0.16
The List (Unfinity Foil Edition)
- Down 19.1% over the last 30 days on TCGplayer.
- Currently 23% below its 90 day high of $0.22.
- This is the most expensive paper printing currently priced (2 priced in total).
- Foil copies of this printing carry a 47% premium over nonfoil.
Find this printing on eBayView on TCGplayerAffiliate. MTGPrices may earn from qualifying eBay and TCGplayer purchases.
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Play
Compare printings (2 priced)
Gameplay and rules
Legendary Creature — Human Villain
: 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
Card capabilities
CreatureLegendary creature
Derived deterministically from card types, Oracle text and keywords. Not a strategic evaluation.
Format legality
Primary formats
Eternal formats
Digital formats
Rulings (3)
wotc19 Jan 2018
You can activate Mary O’Kill’s ability if it is in your hand.
wotc19 Jan 2018
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!
wotc19 Jan 2018
Killbot is a creature type. There are several Killbots in the Unstable set.
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Ranked by shared capabilities, colour identity, mana value and type. Never by strategic judgement.
Shares Creature, Legendary creatureSame colour identity
Shares Creature, Legendary creatureSame colour identity
Shares Creature, Legendary creatureOverlapping colour identity
Shares Creature, Legendary creatureOverlapping colour identity
Shares Creature, Legendary creatureOverlapping colour identity
Shares Creature, Legendary creatureOverlapping colour identity
Shares Creature, Legendary creatureOverlapping colour identity
Shares Creature, Legendary creatureOverlapping colour identity
About this card
Mary O'Kill
Mary O'Kill is a Legendary Creature — Human Villain, with mana cost {5}{B/R} (mana value 6). Printed 2 times across MTG sets.
Format legality: Commander: not_legal, Modern: not_legal, Standard: not_legal, Pioneer: not_legal, Legacy: not_legal, Pauper: not_legal.
Current headline price on TCGplayer: $0.17 (down 19.1% over 30 days).
Frequently asked
Mary O'Kill FAQ
How much is Mary O'Kill worth?
The current TCGplayer USD retail price for Mary O'Kill is $0.17. It is down 19.1% over the last 30 days. Over 90 days it has ranged from $0.17 to $0.22.
What is the cheapest printing of Mary O'Kill?
The cheapest currently priced paper printing is from The List (Unfinity Foil Edition) at $0.16 on TCGplayer.
What is the most expensive printing of Mary O'Kill?
The most expensive currently priced paper printing is from Unstable at $0.17 on TCGplayer.
How many printings of Mary O'Kill are there?
Mary O'Kill has been printed 2 times in English paper sets that MTGPrices tracks.
What set was Mary O'Kill first printed in?
The earliest English paper printing that MTGPrices tracks is from UST #138, released 2017-12-08.
What is the newest printing of Mary O'Kill?
The most recent English paper printing that MTGPrices tracks is from ULST #50, released 2022-10-07.
Is there a foil version of Mary O'Kill?
Yes. On this printing, foil copies trade at $0.25 versus $0.17 for nonfoil, which is 47% more expensive on TCGplayer.
Is Mary O'Kill legal in Commander?
Mary O'Kill is not currently legal in Commander per Scryfall's legality feed.