Gem-Knight Hollowcore
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 (market low)
Not enough price history yet — it builds as we scrape.
Printings (2)
| Set | Rarity | No. | Market low | |
|---|---|---|---|---|
| Battles of Legend: Monster Mayhem · 1st | Secret Rare | BLMM-EN022 | $0.10 | |
| Battles of Legend: Monster Mayhem · 1st | Secret Rare | BLMM-EN022 | — |