Expansion Algorithm
SOCSecrets of Strixhaven Commander/#19/2026Rare
Colour IDMV 2
Current paper retail
Card Kingdom$4.99
Cardmarket€2.83
ManaPool$1.85
TCGplayer$2.55
Buylist (dealers pay)
Card Kingdom$1.50
MTGO (Cardhoarder)
retail$2.06 tix
Paper retail history (USD)
3 providers
Latest $4.99High $4.99Low $2.79▲ 66.9%
Market and collecting
Market overview
$2.55TCGplayer, USD, retail, nonfoil
Latest observation: 2026-11-09
7d▲ 2.8%30d▲ 3.2%90d▲ 21.4%
90d high
$2.75
90d low
$1.80
Paper printings priced
2
Currently 1st
Cheapest paper printing
$2.55
Secrets of Strixhaven Commander
- Up 3.2% over the last 30 days on TCGplayer.
- Currently 7% below its 90 day high of $2.75.
- This is the cheapest paper printing of the card currently priced (2 priced in total).
Find this printing on eBayView on TCGplayerAffiliate. MTGPrices may earn from qualifying eBay and TCGplayer purchases.
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Compare printings (2 priced)
Gameplay and rules
Sorcery
Proliferate X times. (To proliferate, choose any number of permanents and/or players, then give each another counter of each kind already there.)
Keywords
Proliferate
Card capabilities
Sorcery
Derived deterministically from card types, Oracle text and keywords. Not a strategic evaluation.
Format legality
Primary formats
Eternal formats
Digital formats
Rulings (6)
wotc20 Mar 2026
While proliferating multiple times, players can't respond between proliferating the first time and proliferating the second time, and so on.
wotc20 Mar 2026
You don't have to choose every permanent or player that has a counter—only the ones you want to add counters 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.
wotc20 Mar 2026
Players can respond to a spell or ability whose effect includes proliferating. Once that spell or ability starts to resolve, however, and its controller chooses which permanents and players will get new counters, it's too late for anyone to respond.
wotc20 Mar 2026
If you proliferate multiple times, you don't have to choose the same set of players and/or permanents to get additional counters each time.
wotc20 Mar 2026
When you 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.
wotc20 Mar 2026
If a player or permanent has more than one kind of counter on it, and you choose for it to get additional counters, it must get one of each kind of counter it already has. You can't have it get just one kind of counter it already has and not the others.
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Ranked by shared capabilities, colour identity, mana value and type. Never by strategic judgement.
About this card
Expansion Algorithm
Expansion Algorithm is a Sorcery, with mana cost {X}{U}{U} (mana value 2). Printed 2 times across MTG sets.
Format legality: Commander: legal, Modern: not_legal, Standard: not_legal, Pioneer: not_legal, Legacy: legal, Pauper: not_legal.
Current headline price on TCGplayer: $2.55 (up 3.2% over 30 days).
Frequently asked
Expansion Algorithm FAQ
How much is Expansion Algorithm worth?
The current TCGplayer USD retail price for Expansion Algorithm is $2.55. It is up 3.2% over the last 30 days. Over 90 days it has ranged from $1.80 to $2.75.
What is the cheapest printing of Expansion Algorithm?
The cheapest currently priced paper printing is from Secrets of Strixhaven Commander at $2.55 on TCGplayer.
What is the most expensive printing of Expansion Algorithm?
The most expensive currently priced paper printing is from Secrets of Strixhaven Commander at $3.22 on TCGplayer.
How many printings of Expansion Algorithm are there?
Expansion Algorithm has been printed 2 times in English paper sets that MTGPrices tracks.
What set was Expansion Algorithm first printed in?
The earliest English paper printing that MTGPrices tracks is from SOC #19, released 2026-04-24.
Is Expansion Algorithm legal in Commander?
Yes, Expansion Algorithm is currently legal in Commander per Scryfall's legality feed.
Is Expansion Algorithm legal in Modern?
Expansion Algorithm is not currently legal in Modern per Scryfall's legality feed.
Is Expansion Algorithm legal in Standard?
Expansion Algorithm is not currently legal in Standard per Scryfall's legality feed.