Simulated holo effect, for illustration only.
Gem-Knight Hollowcore
- Expansion
- Battles of Legend: Monster Mayhem
- Code
- BLMM-EN022
- Rarity
- Secret Rare
- Card type
- Monster · Fiend/Effect
- Attribute
- DARK
- Level
- 7
- ATK / DEF
- 1950 / 2450
- Archetype
- Gem-
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.
Price history
Ungraded cards
Condition: Near Mint (Mint and Near Mint)
- From
- —
- Price trend
- €0.49
- Average price 30 days
- €0.29
- Average price 7 days
- €0.29
- Average price 1 day
- €0.37
Oct 2, 2026 · €0.49
The dashed line is an estimate from the markets' rolling averages; recorded history starts on Oct 1, 2026.
Show data as a table
| Date | Price | Low |
|---|---|---|
| Oct 2, 2026 | €0.49 | — |
| Oct 1, 2026 | €0.37 | — |
| Sep 24, 2026 (estimate) | €0.29 | — |
| Sep 1, 2026 (estimate) | €0.29 | — |
Graded index
Certified cards, by grader and grade — kept apart from ungraded prices.
No graded prices
There aren't enough reliable offers for this graded card on external markets.