Expansion Algorithm
Expansion Algorithm Price Summary
As of Aug 9, 2026, the cheapest tracked printing of Expansion Algorithm is $2.07 (SOC #19), and the most expensive is $2.58 (SOC #69, Extended Art). The benchmark price (cheapest playable nonfoil) is $2.07, down 3.7% over 7 days, down 5.0% over 30 days, down 47.5% over 90 days. All-time tracked high: $9.99 (2026).
Expansion Algorithm Printings & Prices
Expansion Algorithm has 2 tracked printings across 1 sets, in nonfoil and foil finishes, including extended art treatments.
Sell Expansion Algorithm: Buylist Offers
Card Kingdom currently pays $1.00 cash for SOC #19; the retail-buylist spread on that printing is 67% (wide).
| Buyer | Printing | Finish | Cash offer | Retail | Spread |
|---|---|---|---|---|---|
| CoolStuffInc | SOC #69 | Nonfoil | $1.00 | — | — |
| Card Kingdom | SOC #19 | Nonfoil | $1.00 | $2.99 | 67% |
| CoolStuffInc | SOC #19 | Nonfoil | $0.90 | — | — |
| Card Kingdom | SOC #69 | Nonfoil | $0.50 | $2.99 | 83% |
Expansion Algorithm Rules Text & Legality
Proliferate X times. (To proliferate, choose any number of permanents and/or players, then give each another counter of each kind already there.)
Expansion Algorithm is legal in Legacy and Commander, and not legal in Standard, Pioneer, Modern and Pauper.
Expansion Algorithm Rulings
- Mar 20, 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.
- Mar 20, 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.
- Mar 20, 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.
- Mar 20, 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.
- Mar 20, 2026 While proliferating multiple times, players can't respond between proliferating the first time and proliferating the second time, and so on.
Reprints & Reprint Risk
Expansion Algorithm has been reprinted 4 times. The Secrets of Strixhaven Commander reprint cut the price 50% in 30 days.
| Set | Date | Rarity | Treatment | Price before | Day 1 | 30 days | 90 days |
|---|---|---|---|---|---|---|---|
| SOC #19 | 2026-04-24 | Rare | Standard | $5.31 | $5.67 | $2.63 | $2.12 |
| SOC #69 | 2026-04-24 | Rare | Extended Art | $5.14 | $3.81 | $4.68 | $2.43 |
| SOC #19 | 2026-04-24 | Rare | Standard | — | — | — | — |
| SOC #69 | 2026-04-24 | Rare | Extended Art | — | — | — | — |
SOC #19 Expansion Algorithm in Commander
Expansion Algorithm is the #7,591 most-played card on EDHREC, up 887 places over the last 30 days.
Expansion Algorithm FAQ
How much is Expansion Algorithm worth?
Expansion Algorithm is worth about $2.07 for its cheapest playable printing as of Aug 9, 2026. Prices range from $2.07 to $2.58 across 2 tracked printings.
Is Expansion Algorithm legal in Commander?
Yes — Expansion Algorithm is legal in Commander. It is also legal in Legacy.
Has Expansion Algorithm been reprinted?
Yes — Expansion Algorithm has been reprinted 4 times, with 2 printings tracked on The Index.
Why is Expansion Algorithm cheap?
Expansion Algorithm trades at about $2.07 — 4 reprints keep supply plentiful, and Commander demand is modest (#7,591 on EDHREC).