Yu-Gi-Oh! · Battles of Legend: Monster Mayhem
Gem-Knight Hollowcore
Gem-Knight Hollowcore (Battles of Legend: Monster Mayhem BLMM-EN022) has a market price of US$0.24 as of Nov 9, 2026.
Price guide
The market price on TCGplayer, in US dollars: a guide, not an offer.
Market price
As of Nov 9, 2026 · The market price is TCGplayer’s, in US dollars. It is a guide, not an offer.
Card details
- Type
- Effect Monster
- Level
- 7
- Attribute
- DARK
- Monster type
- Fiend
- Archetype
- Gem-
- ATK
- 1,950
- DEF
- 2,450
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.
About this card
Gem-Knight Hollowcore is card BLMM-EN022 in Battles of Legend: Monster Mayhem, a Yu-Gi-Oh! set released Jun 13, 2025. Rarity: Secret Rare. Finishes: 1st Edition. Reference market price on Nov 9, 2026: US$0.24. Over the last 30 days, the 1st Edition price went up 9.1%. Source: TCGplayer market data via tcgcsv.com, updated daily. A reference price is not an offer.
