Quandrix, the Proof
SOSSecrets of Strixhaven/#286/2026MythicBorderless
Colour IDMV 6
Current paper retail
Card Kingdom$3.99
Cardmarket€3.95
ManaPool$2.78
TCGplayer$4.26
Buylist (dealers pay)
Card Kingdom$1.00
MTGO (Cardhoarder)
retail$0.07 tix
Paper retail history (USD)
3 providers
Latest $3.99High $5.49Low $3.49▼ 27.3%
Market and collecting
Market overview
$4.26TCGplayer, USD, retail, nonfoil
Latest observation: 2026-11-10
7d▼ 8.0%30d▼ 10.5%90d▼ 18.7%
90d high
$5.25
90d low
$4.19
Paper printings priced
3
Currently 3rd
Cheapest paper printing
$0.96
Secrets of Strixhaven
- Down 10.5% over the last 30 days on TCGplayer.
- Currently 19% below its 90 day high of $5.25.
- This is the most expensive paper printing currently priced (3 priced in total).
- Foil copies of this printing carry a 40% 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 (3 priced)
Gameplay and rules
Legendary Creature — Elder Dragon
Flying, trample
Cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom in a random order.)
Instant and sorcery spells you cast from your hand have cascade.
6 / 6
Keywords
CascadeFlyingTrample
Card capabilities
CreatureLegendary creature
Derived deterministically from card types, Oracle text and keywords. Not a strategic evaluation.
Format legality
Primary formats
Eternal formats
Rulings (9)
wotc20 Mar 2026
Cascade triggers when you cast the spell, meaning that it resolves before that spell. If you end up casting the exiled card, it will go on the stack above the spell with cascade.
wotc20 Mar 2026
You exile the cards face up. All players will be able to see them.
wotc20 Mar 2026
If the card has {X} in its mana cost, you must choose 0 as the value of X when casting it without paying its mana cost.
wotc20 Mar 2026
If a spell with cascade is countered, the cascade ability will still resolve normally.
wotc20 Mar 2026
A spell's mana value is determined only by its mana cost. Ignore any alternative costs, additional costs, cost increases, or cost reductions.
wotc20 Mar 2026
If you cast a card "without paying its mana cost," you can't choose to cast it for any alternative costs. You can, however, pay additional costs. If the card has any mandatory additional costs, you must pay those to cast the card.
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Ranked by shared capabilities, colour identity, mana value and type. Never by strategic judgement.
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About this card
Quandrix, the Proof
Quandrix, the Proof is a Legendary Creature — Elder Dragon, with mana cost {4}{G}{U} (mana value 6). Printed 3 times across MTG sets.
Format legality: Commander: legal, Modern: legal, Standard: legal, Pioneer: legal, Legacy: legal, Pauper: not_legal.
Current headline price on TCGplayer: $4.26 (down 10.5% over 30 days).
Frequently asked
Quandrix, the Proof FAQ
How much is Quandrix, the Proof worth?
The current TCGplayer USD retail price for Quandrix, the Proof is $4.26. It is down 10.5% over the last 30 days. Over 90 days it has ranged from $4.19 to $5.25.
What is the cheapest printing of Quandrix, the Proof?
The cheapest currently priced paper printing is from Secrets of Strixhaven at $0.96 on TCGplayer.
What is the most expensive printing of Quandrix, the Proof?
The most expensive currently priced paper printing is from Secrets of Strixhaven at $4.26 on TCGplayer.
How many printings of Quandrix, the Proof are there?
Quandrix, the Proof has been printed 3 times in English paper sets that MTGPrices tracks.
What set was Quandrix, the Proof first printed in?
The earliest English paper printing that MTGPrices tracks is from SOS #286, released 2026-04-24.
Is there a foil version of Quandrix, the Proof?
Yes. On this printing, foil copies trade at $5.98 versus $4.26 for nonfoil, which is 40% more expensive on TCGplayer.
Is Quandrix, the Proof legal in Commander?
Yes, Quandrix, the Proof is currently legal in Commander per Scryfall's legality feed.
Is Quandrix, the Proof legal in Modern?
Yes, Quandrix, the Proof is currently legal in Modern per Scryfall's legality feed.