· Battles of Legend: Monster Mayhem

Gem-Knight Hollowcore

EN022 • Secret Rare

A near-mint Gem-Knight Hollowcore #EN022 from Battles of Legend: Monster Mayhem (Yu-Gi-Oh!) is worth about £0.21.

Market value

£0.21

JustTCG

eBay search

Near Mint 1st Edition

£0.21

Lightly Played 1st Edition

£0.17

Moderately Played 1st Edition

£0.16

Heavily Played 1st Edition

£0.07

As an eBay Partner, we may be compensated if you make a purchase.

About Gem-Knight Hollowcore

Gem-Knight Hollowcore (card #EN022) is a Secret Rare card from the Battles of Legend: Monster Mayhem set in the Yu-Gi-Oh! Trading Card Game. It carries a rarity of Secret Rare, which determines how often it appears in booster packs. The Battles of Legend: Monster Mayhem set was released in 2025. Based on live market data, a near-mint copy is currently valued at around £0.21 on The TCG OS. Track its full price history, compare raw and graded values, browse other printings, and find live listings below.

Card details

Set: Battles of Legend: Monster Mayhem
Number: #EN022
Rarity: Secret Rare
Year: 2025
Game: Yu-Gi-Oh!
Market value: £0.21 (near-mint)

Available now

No shops stock this right now

No approved shop currently lists this card. Stock comes from real shops and changes often, so it is worth checking back. In the meantime you can add the card to your collection, save it to your wishlist, or look at the other printings below.

Add to my collection Save to wishlist

Free, and browsing needs no account — one is only needed to save cards of your own.

Price trend

27 data points

Card details

Type: Effect Monster
Attribute: DARK
Race: Fiend
Level / Rank: 7
ATK / DEF: 1950 / 2450
Archetype: Gem-
Rarity: Secret Rare
Released: 28 Aug 2025

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.