Gem-Knight Hollowcore
Effect Monster
Gem-Knight Hollowcore is a Effect Monster (DARK/Fiend, Level 7) with 1950 ATK / 2450 DEF. First printed in Battles of Legend: Monster Mayhem (2025).
- Type
- Effect Monster
- Attribute
- DARK
- Monster type
- Fiend
- Level
- 7
- ATK / DEF
- 1950 / 2450
- Archetype
- Gem-
- Banlist
- Unlimited in the TCG, OCG, and Master Duel
- TCG release
- Jun 13, 2025
- Printings
- 1
Card text
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.
YGOPRODeck card-level price
≈$0.22 lowest USD figure across marketplaces, for no one printing
YGOPRODeck recorded a lowest available USD card-level price hint of ~$0.22 on Oct 26, 2026 (historical, not a printing-specific quote). It varies with printing, condition, edition, rarity, and grading. Check current listings before buying or selling.
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Printings & rarities
| Set | Set code | Rarity | Release | Price* | Buy |
|---|---|---|---|---|---|
| Battles of Legend: Monster MayhemBLMM-EN022 · Secret Rare · Aug 28, 2025 | BLMM-EN022 | Secret Rare | Aug 28, 2025 | ~$0.211st Edition | Buy on TCGplayerSearch eBay |
*Approximate price hints, not appraisals. A price with a finish (1st Edition, Unlimited, Limited) is TCGplayer's for that set code, rarity and finish, via TCGCSV, updated Oct 26, 2026. A price marked YGOPRODeck is YGOPRODeck's figure for that printing. A dash means that printing has no price yet. Buy links are affiliate links.
Price hint history
Dated YGOPRODeck snapshots. These hints are not sales or market values.
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Gem-Knight Hollowcore in other languages
| Japanese | ジェムナイト・ヴォイドルーツ |
| Korean | 젬나이트 보이드루츠 |
| Chinese | 宝石骑士・虚炼原核 |
| German | Edelstein-Ritter Hohlkern |
| French | Carcassenoyau, Chevalier-Gemmes |
| Italian | Cavaliere-Gemma Nucleocavo |
| Spanish | Caballero-Gema Hueconúcleo |
| Portuguese | Cavaleiro-Gema Núcleo Oco |
