Nightmare's Steelcage
Structure Deck: Marik · #EN021

Nightmare's Steelcage

Nightmare's Steelcage is a Common Spell Card from Structure Deck: Marik (EN021) in the Yu-Gi-Oh! TCG. Cactaur's latest catalog snapshot shows a market reference near $0.48 for ungraded copies.

Structure Deck: Marik set collectorsBulk and playset buyers
TCGPlayer market $0.48
Cardmarket trend
Rarity Common
App coming soon

Who is this card for?

Nightmare's Steelcage suits collectors and players working on Structure Deck: Marik who need the Common slot. This is typically a low-cost slot for master sets; avoid overpaying unless you need a specific edition or near-mint condition.

What is Nightmare's Steelcage from Structure Deck: Marik?

Nightmare's Steelcage is a Spell Card in Structure Deck: Marik numbered EN021. Nightmare's Steelcage (EN021) from Structure Deck: Marik should be evaluated with set context, stats, archetype, and condition together. This printing is from Structure Deck: Marik. Collector number EN021 distinguishes this printing from same-name cards in other sets.

What is Nightmare's Steelcage worth today?

Cactaur tracks a market reference near $0.48 for Nightmare's Steelcage. Low and high spread runs $0.48 to null. This printing is from Structure Deck: Marik. Collector number EN021 distinguishes this printing from same-name cards in other sets. Catalogued rarity: Common. The set released in 2006.

SetStructure Deck: Marik
NumberEN021
RarityCommon
TCGPlayer USD$0.48
Cardmarket EUR

How collectible is Nightmare's Steelcage?

Nightmare's Steelcage is a Common printing in Structure Deck: Marik. Master set builders use set code and passcode to track completion progress. This printing is from Structure Deck: Marik. Collector number EN021 distinguishes this printing from same-name cards in other sets. Catalogued rarity: Common.

What are the key details for Nightmare's Steelcage?

Nightmare's Steelcage lists as Spell Card (Normal). Rules text is indexed in the catalog for search and deck research. This printing is from Structure Deck: Marik. Collector number EN021 distinguishes this printing from same-name cards in other sets. Catalogued rarity: Common. The set released in 2006.

Cactaur's take

Nightmare's Steelcage (EN021) from Structure Deck: Marik should be evaluated with set context, stats, archetype, and condition together.

Pros

  • Nightmare's Steelcage is catalogued as Common Spell Card in Structure Deck: Marik, making set code and passcode verification straightforward.
  • Public market data shows a reference near $0.48.

Cons

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

Verdict: Treat this as a low-stakes master-set slot unless you are paying for gem condition or a specific edition.

FAQ

What is Nightmare's Steelcage from Structure Deck: Marik?

Nightmare's Steelcage is a Common Spell Card from Structure Deck: Marik numbered EN021 in the Yu-Gi-Oh! TCG. Cactaur indexes set, rarity, stats, and market references for this printing.

How much is Nightmare's Steelcage worth?

Cactaur's catalog snapshot shows a market reference near $0.48 for ungraded Nightmare's Steelcage. Condition, edition, and recent sold comps can move realized prices above or below that benchmark.

What rarity is Nightmare's Steelcage?

Nightmare's Steelcage is catalogued as Common in Structure Deck: Marik. Use the set code on listings to confirm you are buying this exact printing. This printing is from Structure Deck: Marik.

How do I verify the correct Nightmare's Steelcage printing?

Match set code sdma, collector number EN021, and edition. YGOPRODeck-backed metadata on this page is the reference Cactaur uses for catalog keys. This printing is from Structure Deck: Marik.

Should I buy Nightmare's Steelcage near mint or played?

Near-mint copies command the catalog reference near $0.48. 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: 2026-06-25. Last updated: 2026-06-25.