Tainted Observer
ONEPhyrexia: All Will Be One/#217/2023Uncommon
Colour IDMV 3
Current paper retail
Card Kingdom$0.35
Cardmarket€0.13
ManaPool$0.15
TCGplayer$0.28
Buylist (dealers pay)
Card Kingdom$0.03
MTGO (Cardhoarder)
retail$0.03 tix
Paper retail history (USD)
3 providers
Latest $0.35High $0.35Low $0.35▲ 0.0%
Market and collecting
Market overview
$0.28TCGplayer, USD, retail, nonfoil
Latest observation: 2026-11-10
7d▲ 0.0%30d▼ 3.5%90d▼ 17.6%
90d high
$0.34
90d low
$0.22
Paper printings priced
1
Currently 1st
Cheapest paper printing
$0.28
Phyrexia: All Will Be One
- Down 3.5% over the last 30 days on TCGplayer.
- Currently 18% below its 90 day high of $0.34.
- Foil copies of this printing carry a 7% premium over nonfoil.
Find this printing on eBayView on TCGplayerAffiliate. MTGPrices may earn from qualifying eBay and TCGplayer purchases.
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Compare printings (1 priced)
Gameplay and rules
Creature — Phyrexian Bird
Flying
Toxic 1 (Players dealt combat damage by this creature also get a poison counter.)
Whenever another creature you control enters, you may pay . If you do, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
2 / 3
Keywords
FlyingToxicProliferate
Card capabilities
Creature
Derived deterministically from card types, Oracle text and keywords. Not a strategic evaluation.
Format legality
Primary formats
Eternal formats
Rulings (13)
wotc4 Feb 2023
Multiple instances of toxic are cumulative. For example, if a creature has toxic 2 and gains toxic 1 due to another effect, combat damage that creature deals to a player will cause that player to get 3 poison counters.
wotc4 Feb 2023
Any other effects of that damage, such as life gain from lifelink, still apply.
wotc4 Feb 2023
To proliferate, you can choose any permanent that has a counter, including ones controlled by opponents. You can choose any player who has a counter, including opponents. You can't choose cards in any zone other than the battlefield, even if they have counters on them.
wotc4 Feb 2023
Conversely, replacement effects that apply to the number of counters put on a player can modify the counters placed this way. For example, Vorinclex, Monstrous Raider's last two abilities can apply to counters placed this way.
wotc4 Feb 2023
You don't have to choose every permanent or player that has a counter, only the ones you want to add another counter to. Since "any number" includes zero, you don't have to choose any permanents at all, and you don't have to choose any players at all.
wotc4 Feb 2023
An ability that triggers "Whenever you proliferate" triggers even if you chose no permanents or players while doing so.
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Ranked by shared capabilities, colour identity, mana value and type. Never by strategic judgement.
About this card
Tainted Observer
Tainted Observer is a Creature — Phyrexian Bird, with mana cost {1}{G}{U} (mana value 3).
Format legality: Commander: legal, Modern: legal, Standard: not_legal, Pioneer: legal, Legacy: legal, Pauper: not_legal.
Current headline price on TCGplayer: $0.28 (down 3.5% over 30 days).
Frequently asked
Tainted Observer FAQ
How much is Tainted Observer worth?
The current TCGplayer USD retail price for Tainted Observer is $0.28. It is down 3.5% over the last 30 days. Over 90 days it has ranged from $0.22 to $0.34.
What is the cheapest printing of Tainted Observer?
The cheapest currently priced paper printing is from Phyrexia: All Will Be One at $0.28 on TCGplayer.
What set was Tainted Observer first printed in?
The earliest English paper printing that MTGPrices tracks is from ONE #217, released 2023-02-10.
Is there a foil version of Tainted Observer?
Yes. On this printing, foil copies trade at $0.30 versus $0.28 for nonfoil, which is 7% more expensive on TCGplayer.
Is Tainted Observer legal in Commander?
Yes, Tainted Observer is currently legal in Commander per Scryfall's legality feed.
Is Tainted Observer legal in Modern?
Yes, Tainted Observer is currently legal in Modern per Scryfall's legality feed.
Is Tainted Observer legal in Standard?
Tainted Observer is not currently legal in Standard per Scryfall's legality feed.
What does Tainted Observer do?
Tainted Observer is a Creature — Phyrexian Bird with mana cost {1}{G}{U}. Its Oracle text reads: "Flying Toxic 1 (Players dealt combat damage by this creature also get a poison counter.) Whenever another creature you control enters, you may pay {2}. If you do, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)".