What is Gem-Knight Hollowcore worth?

Gem-Knight Hollowcore from Battles of Legend: Monster Mayhem is currently valued at $0.38 for the 1st Edition variant.

What set is Gem-Knight Hollowcore from?

Gem-Knight Hollowcore is card #BLMM-EN022 from the Yu-Gi-Oh! set Battles of Legend: Monster Mayhem, released June 13, 2025.

What type of card is Gem-Knight Hollowcore?

Gem-Knight Hollowcore is a Effect Monster card in the Yu-Gi-Oh! trading card game.

Gem-Knight Hollowcore

Battles of Legend: Monster Mayhem#BLMM-EN022Secret Rare

[Fiend]

ATK1950/DEF2450

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.