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Gem-Knight Hollowcore

Yu-Gi-Oh! card · Effect Monster · first printed 2025 in Battles of Legend: Monster Mayhem

BLMM-EN0222025
Gem-Knight HollowcoreDARK
★★★★★★★
[Fiend / Effect]
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.
ATK/1950DEF/2450
BLMM-EN0222025 · Secret Rare
Card nameGem-Knight Hollowcore
Card typeEffect Monster
AttributeDARK
TypeFiend
Level / Rank / LinkLevel 7
ATK1950
DEF / Link Arrows2450
Pendulum Scale–
Abilities–
ArchetypeGem-
DeckMain Deck
First setBattles of Legend: Monster Mayhem
First card codeBLMM-EN022
First raritySecret Rare
First releasedAugust 28, 2025
English TCG printings1

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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.

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