Yu-Gi-Oh!
Gem-Knight Hollowcore
Battles of Legend: Monster Mayhem · #BLMM-EN022 · Secret Rare · 2025
Effect Monster
Listings
No active listings
From
—
Market reference
$0.38
TCGPlayer
Current listings on The Game Traders
No active listings for this card right now.
Card facts
Quick reference for collectors and graders.
- Set position
- BLMM-EN022 of 177
- Release year
- 2025
- Rarity
- Secret Rare
- Level
- 7
- Attribute
- DARK
- Total printings
- 1
About this card
Type: Effect Monster · Fiend · DARK
Archetype: Gem-
ATK: 1950 · DEF: 2450 · Level: 7
You can send 1 "Gem-Knight" Normal Monster or 1 "Gem-Knight Fusion" from your Deck to the GY; Special Summon this card from your hand in Defense Position. When your opponent activates a card or effect, while you control a "Gem-Knight" Fusion Monster (Quick Effect): You can banish 3 "Gem-Knight" cards from your GY, including this card; negate that effect, then all "Gem-Knight" monsters you currently control gain 1000 ATK. You can only use each effect of "Gem-Knight Hollowcore" once per turn.
Pricing reference
Latest snapshot from the upstream catalog. Actual marketplace prices fluctuate by condition, edition, and grade — use this as a reference, not a quote.
Marketplace pricing
YGOPRODeck aggregate| Variant | Price |
|---|---|
| TCGPlayer | $0.38 |
| Cardmarket | $0.27 |
Frequently asked
How can I tell if my Gem-Knight Hollowcore is real?
Gem-Knight Hollowcore is not on our list of commonly-counterfeited cards, but counterfeits exist across every set. Check the holographic sticker on the bottom-right of the card face (real cards have a specific Konami anti-counterfeit pattern), the cardstock thickness and texture, font weight on the card name, and verify the set code printed on the card. For high-value copies we recommend submitting to a professional grader (PSA, BGS, CGC) for tamper-evident authentication.
What is Gem-Knight Hollowcore worth?
As of the latest data, the current market reference price for Gem-Knight Hollowcore is $0.38; there are no active listings on The Game Traders right now. Actual value depends on condition, grading, edition and printing variant — graded high-condition copies (PSA 9–10) trade at a substantial premium over raw copies.
What set is Gem-Knight Hollowcore from?
Gem-Knight Hollowcore is from the Yu-Gi-Oh! set "Battles of Legend: Monster Mayhem", released in 2025.
What rarity is Gem-Knight Hollowcore?
Gem-Knight Hollowcore is a Secret Rare card in the Battles of Legend: Monster Mayhem set.
