Yu-Gi-Oh!
Gem-Knight Hollowcore
Battles of Legend: Monster Mayhem · #BLMM-EN022 · Secret Rare · 2025
Effect Monster
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About this card
Type: Effect Monster · Fiend
Archetype: Gem-
ATK/DEF: 1950 / 2450
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.
