Serum Sovereign
Phyrexia: All Will Be One · #405

Serum Sovereign

Serum Sovereign is a Rare Creature — Phyrexian Sphinx from Phyrexia: All Will Be One (405) in Magic: The Gathering. Mana cost {4}{U}. Color identity: U. Cactaur's latest catalog snapshot shows a market reference near $0.35 for ungraded copies.

Phyrexia: All Will Be One set collectorsRarity-focused collectorsPrice-conscious singles buyers [object Object][object Object][object Object][object Object][object Object][object Object]
TCGPlayer market $0.35
Cardmarket trend €0.19
Rarity Rare
App coming soon

Who is this card for?

Serum Sovereign suits collectors and players working on Phyrexia: All Will Be One who need the Rare slot. Compare listing photos to your target finish and confirm the Scryfall collector number before buying online.

What is Serum Sovereign from Phyrexia: All Will Be One?

Serum Sovereign is a Creature — Phyrexian Sphinx in Phyrexia: All Will Be One numbered 405. Mana cost {4}{U}. Color identity: U. Serum Sovereign (405) from Phyrexia: All Will Be One should be evaluated with set context, mana cost, color identity, and condition together.

What is Serum Sovereign worth today?

Cactaur tracks a market reference near $0.35 for Serum Sovereign. Low and high spread runs $0.35 to null. Per-finish references: cardmarket: $0.19; foil: $0.35; Normal: $0.32. This printing is from Phyrexia: All Will Be One. Collector number 405 distinguishes this printing from same-name cards in other sets.

SetPhyrexia: All Will Be One
Number405
RarityRare
TCGPlayer USD$0.35
Cardmarket EUR€0.19
cardmarket $0.19
foil $0.35
Normal $0.32

Card stats

ColorsU
Power4

How collectible is Serum Sovereign?

Serum Sovereign is a Rare printing in Phyrexia: All Will Be One. Master set builders use collector number and set symbol to track completion progress. This printing is from Phyrexia: All Will Be One. Collector number 405 distinguishes this printing from same-name cards in other sets.

What are the key details for Serum Sovereign?

Serum Sovereign lists as Creature — Phyrexian Sphinx with keywords Scry, Flying. Artist: Chris Rallis. Rules text is indexed in the catalog for search and deck research. This printing is from Phyrexia: All Will Be One. Collector number 405 distinguishes this printing from same-name cards in other sets.

Cactaur's take

Serum Sovereign (405) from Phyrexia: All Will Be One should be evaluated with set context, mana cost, color identity, and condition together.

Pros

  • Serum Sovereign is catalogued as Rare Creature — Phyrexian Sphinx in Phyrexia: All Will Be One, making set and collector number verification straightforward.
  • Public market data shows a reference near $0.35 across finishes (cardmarket: $0.19; foil: $0.35; Normal: $0.32).
  • Mana cost {4}{U} and type line Creature — Phyrexian Sphinx help deck builders confirm the correct printing quickly.

Cons

  • Raw market prices vary by condition and finish — near-mint estimates are not slab grades.

Verdict: Use $0.35 as a benchmark, then adjust for finish, grade, and how quickly you need to buy or sell.

FAQ

What is Serum Sovereign from Phyrexia: All Will Be One?

Serum Sovereign is a Rare Creature — Phyrexian Sphinx from Phyrexia: All Will Be One numbered 405 in Magic: The Gathering. Cactaur indexes set, rarity, mana cost, and market references for this printing.

How much is Serum Sovereign worth?

Cactaur's catalog snapshot shows a market reference near $0.35 for ungraded Serum Sovereign. Condition, finish, and recent sold comps can move realized prices above or below that benchmark.

What rarity is Serum Sovereign?

Serum Sovereign is catalogued as Rare in Phyrexia: All Will Be One. Use the collector number and set symbol on listings to confirm you are buying this exact printing.

Is Serum Sovereign legal in Commander or Standard?

Serum Sovereign shows format legality in historic, timeless, gladiator, pioneer based on our latest ingest. Always verify the exact printing and ban-list updates before registering a deck for an event.

Should I buy Serum Sovereign near mint or played?

Near-mint copies command the catalog reference near $0.35. Heavily played copies trade lower unless the card is a chase rare where any clean copy is scarce.

Related cards

Trust & data sources. Cactaur displays catalog and market data from pokemontcg.io embedded TCGPlayer/Cardmarket references. Prices change frequently and are not guarantees.

Cactaur does not authenticate cards or guarantee values. Scan your copy in the iPhone app for condition-aware guidance.

Catalog snapshot: 2026-06-23. Last updated: 2026-06-23.