Magnificent Monsters

If this card is Normal or Special Summoned: You can add 1 "Gem-Knight" card from your Deck to your hand, except "Gem-Knight Nepyrim", also any effect damage your opponent takes during the Main Phase this turn is halved. During your Main Phase, you can: Immediately after this effect resolves, Normal Summon 1 "Gem-" monster. If this card is sent from the hand or Deck to the GY: You can send 1 card from your hand to the GY, and if you do, Special Summon this card. You can only use each effect of "Gem-Knight Nepyrim" once per turn.

Gem-Knight Nepyrim

Battles of Legend: Monster Mayhem

Add 1 "Gem-Knight" card from your Deck to your hand, then you can apply this effect.
● Fusion Summon 1 "Gem-Knight" Fusion Monster from your Extra Deck, by banishing Fusion Materials listed on it from your hand or your side of the field.
You can only activate 1 "Absorb Fusion" per turn. You cannot Special Summon monsters the turn you activate this card, except "Gem-Knight" monsters.

Absorb Fusion

When this card is Normal Summoned: You can add 1 "Gem-Knight" monster from your Deck to your hand.

Gem-Armadillo

During your Main Phase: You can return this face-up card on the field to the hand. During damage calculation, if this card attacked or was attacked: You can send 1 Normal Monster from your hand to the Graveyard; this card gains 1000 DEF.

Gem-Elephant

You can Tribute this card; Special Summon 1 "Gem-Knight" Normal Monster from your Deck.

Gem-Knight Alexandrite

1 "Gem-Knight" monster + 1 Aqua-Type monster
Must first be Fusion Summoned. When this card is sent from the field to the Graveyard: Return all Set Spell and Trap Cards on the field to the hand.

Gem-Knight Amethyst

"Gem-Knight Sapphire" + 1 "Gem-Knight" monster
Must first be Fusion Summoned with the above Fusion Material Monsters. If this card attacks, it is changed to Defense Position at the end of the Battle Phase. When this card is sent from the field to the Graveyard: Target 1 card your opponent controls; return that target to the hand.

Gem-Knight Aquamarine

1 "Gem-Knight" monster + 1 Pyro-Type monster
Must first be Fusion Summoned. If this card attacks or is attacked, your opponent cannot activate cards or effects until the end of the Damage Step.

Gem-Knight Citrine

A Gem-Knight officer of high rank, who has optimized the use of the crystal powers. Despite his ability to overwhelm most opponents, he's wary of stretching himself too thin, and opts for solidarity with his comrades.

Gem-Knight Crystal

Activate 1 of these effects (but you can only use each effect of "Gem-Knight Dispersion" once per turn);
● Fusion Summon 1 "Gem-Knight" Fusion Monster from your Extra Deck, using monsters from your hand or field. Up to 2 monsters from your Deck/Extra Deck can be used, if they are non-Rock "Gem-Knight" monsters and you have "Gem-Knight Fusion" in your GY.
● Add 1 "Gem-" monster from your Deck or banishment to your hand, also any effect damage your opponent takes during the Main Phase this turn is halved.

Gem-Knight Dispersion

Fusion Summon 1 "Gem-Knight" Fusion Monster from your Extra Deck, using monsters from your hand or your side of the field as Fusion Materials. If this card is in your Graveyard: You can banish 1 "Gem-Knight" monster from your Graveyard; add this card to your hand.

Gem-Knight Fusion

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.

Gem-Knight Hollowcore

3 "Gem-Knight" monsters
Must first be Fusion Summoned with the above Fusion Materials. You can only Special Summon "Gem-Knight Lady Brilliant Diamond(s)" once per turn. Once per turn: You can send 1 face-up "Gem-Knight" monster you control to the Graveyard, and if you do, Special Summon 1 "Gem-Knight" Fusion Monster from your Extra Deck, ignoring its Summoning conditions.

Gem-Knight Lady Brilliant Diamond

"Gem-Knight Lapis" + 1 "Gem-Knight" monster
Must first be Fusion Summoned with the above Fusion Materials. You can only Special Summon "Gem-Knight Lady Lapis Lazuli(s)" once per turn. Once per turn: You can send 1 "Gem-Knight" monster from your Main Deck or Extra Deck to the Graveyard, and if you do, inflict 500 damage to your opponent for each Special Summoned monster on the field.

Gem-Knight Lady Lapis Lazuli

If this card is sent to the Graveyard by a card effect: You can target 1 Normal Monster in your Graveyard; add that target to your hand.

Gem-Knight Lazuli

3 "Gem-Knight" monsters
Must first be Fusion Summoned. This card gains 100 ATK for each "Gem-" monster in your Graveyard. Once per turn: You can banish 1 Level 7 or lower "Gem-Knight" Fusion Monster from your Graveyard; until the End Phase, this card's name becomes that monster's, and replace this effect with that monster's original effects.

Gem-Knight Master Diamond

3 "Gem-" monsters
During the Main Phase (Quick Effect): You can send this card from the field to the GY; Special Summon up to 3 non-Rock "Gem-" monsters with different names from your Extra Deck and/or GY, ignoring their Summoning conditions, also for the rest of this turn, you cannot Special Summon from the Extra Deck, except Fusion Monsters. When your "Gem-Knight" Fusion Monster is destroyed by battle, while this card is in your GY: You can Special Summon this card. You can only use each effect of "Gem-Knight Master Diamond Dispersion" once per turn.

Gem-Knight Master Diamond Dispersion

2 "Gem-" monsters
If this card is Link Summoned: You can add 1 "Gem-Knight" card from your Deck to your hand. You can pay 1000 LP; Fusion Summon 1 "Gem-Knight" Fusion Monster from your Extra Deck, by shuffling Fusion Materials in your possession listed on it into your Deck, that are banished or in the GY, but it cannot attack directly this turn. You can only use each effect of "Gem-Knight Phantom Quartz" once per turn.

Gem-Knight Phantom Quartz

1 "Gem-Knight" monster + 1 Thunder-Type monster
Must first be Fusion Summoned. Once per turn: You can send 1 "Gem-Knight" card from your hand to the Graveyard to target 1 face-up card on the field; destroy that target.

Gem-Knight Prismaura

"Gem-Knight Garnet" + 1 "Gem-Knight" monster
Must first be Fusion Summoned with the above Fusion Material Monsters. Once per turn: You can Tribute 1 face-up "Gem-" monster; this card gains ATK equal to the Tributed monster's ATK on the field, until the End Phase. If this card attacks a Defense Position monster, inflict piercing Battle Damage to your opponent.

Gem-Knight Ruby

"Gem-Knight Tourmaline" + 1 "Gem-Knight" monster
Must first be Fusion Summoned with the above Fusion Material Monsters. This card can attack twice during each Battle Phase. When this card destroys a monster by battle and sends it to the Graveyard: Inflict damage to your opponent equal to the ATK of the destroyed monster in the Graveyard.

Gem-Knight Topaz

1 "Gem-Knight" monster + 1 Rock-Type monster

Gem-Knight Zirconia

During the Damage Step, in either player's turn, when a face-up EARTH Normal Monster you control attacks or is attacked: You can send this card from your hand to the Graveyard; that monster gains 1000 ATK and DEF until the End Phase.

Gem-Merchant

FLIP: You can add 1 "Gem-Knight Fusion" from your Deck to your hand.

Gem-Turtle

Quarter Century Stampede

When this card is activated: Fusion Summon 1 "Gem-Knight" Fusion Monster from your Extra Deck, using monsters from your Deck as Fusion Material, but change its ATK/DEF to 0. If this card leaves the field, destroy that monster. Once per turn: You can discard 1 Spell; the monster Special Summoned by this card's effect gains ATK/DEF equal to its original ATK/DEF, until the end of your opponent's turn. You can only activate 1 "Brilliant Fusion" per turn.

Brilliant Fusion

25th Anniversary Tin: Dueling Mirrors

1 "Gem-Knight" monster + 1 Fairy monster
Once per opponent's turn, the first time a "Gem-Knight" monster(s) you control would be destroyed by card effect, it is not destroyed. During your turn, when your opponent activates a monster effect (Quick Effect): You can banish 1 "Gem-Knight" card from your GY, then target 1 face-up card your opponent controls; destroy it.

Gem-Knight Lady Rose Diamond

If your opponent controls a monster: You can discard this card; Set 1 "Fusion" Continuous Spell directly from your Deck, also you cannot Special Summon monsters from the Extra Deck for the rest of this turn, except "Gem-Knight" monsters. If this card is used as material for a Fusion Summon, and sent to the GY or banished: You can add 1 "Gem-Knight" monster from your GY to your hand, except "Gem-Knight Quartz". You can only use each effect of "Gem-Knight Quartz" once per turn.

Gem-Knight Quartz

25th Anniversary Tin: Dueling Heroes Mega Pack

(This card is always treated as a "Gem-Knight" card.)
You can discard 1 "Gem-Knight" or "Melodious" card; Special Summon this card from your hand. You can only use this effect of "Brilliant Rose" once per turn. Once per turn: You can send 1 "Gem-Knight" or "Melodious" monster from your Extra Deck to the GY; until the End Phase, this card's name/Type/Attribute become the same as the original name/Type/Attribute of the monster sent to the GY to activate this effect.

Brilliant Rose

Shadows in Valhalla

1 "Gem-Knight" monster + 1 LIGHT monster
Must first be Fusion Summoned with the above Fusion Materials. During your Main Phase, you can Normal Summon/Set 1 monster in addition to your Normal Summon/Set. (You can only gain this effect once per turn.)

Gem-Knight Seraphinite

Advanced Demo Deck Extra Pack

Gem-Knight Pearl

OTS Tournament Pack 6

The Gem-Knight Warrior who carries the Garnet Soul. His Flaming Iron Fist crushes all enemies.

Gem-Knight Garnet

Star Pack Battle Royal

Once per turn: You can send 1 "Gem-Knight" or "Melodious" monster from your hand or Deck to the Graveyard, and if you do, this card's name becomes the sent monster's name, until the End Phase. If this card is in your Graveyard: You can banish 1 Fusion Monster from your Graveyard; Special Summon this card in Defense Position. You can only use this effect of "Crystal Rose" once per turn.

Crystal Rose

2016 Mega-Tin Mega Pack

If a face-up "Gem-Knight" monster(s) you control is destroyed by your opponent's attack or card effect: Target 1 of those destroyed monsters; inflict damage to your opponent equal to its original ATK. If this card is in your Graveyard: You can send 1 "Gem-Knight" card from your hand to the Graveyard; add this card to your hand. You can only activate 1 "Brilliant Spark" per turn.

Brilliant Spark

Astral Pack Eight

If this card is sent from the hand to your Graveyard: You can target 1 Level 4 or lower Normal Monster in your Graveyard; Special Summon that target.

Gem-Knight Obsidian

2015 Mega-Tin Mega Pack

The best of friends with Lazuli, this soldier deeply cares about the well-being of her friends.

Gem-Knight Lapis

Star Pack ARC-V

He channels mystic energies and changes them into fighting strength through the power of Tourmaline. Many admire his way of life.

Gem-Knight Tourmaline

Hidden Arsenal 7: Knight of Stars

Banish from your Graveyard the Fusion Material Monsters that are listed on a "Gem-Knight" Fusion Monster Card, then Special Summon that Fusion Monster from your Extra Deck. (This Special Summon is treated as a Fusion Summon.) Destroy it during the End Phase.

Fragment Fusion

This card is treated as a Normal Monster while face-up on the field or in the Graveyard. While this card is face-up on the field, you can Normal Summon it to have it become an Effect Monster with this effect.
● When this card destroys an opponent's monster by battle and sends it to the Graveyard: You can add 1 "Gem-Knight" card from your Deck to your hand.

Gem-Knight Sardonyx

Hidden Arsenal 6: Omega Xyz

This card is treated as a Normal Monster while face-up on the field or in the Graveyard. While this card is face-up on the field, you can Normal Summon it to have it become an Effect Monster with this effect.
● Once per turn: You can send 1 "Gem-Knight" card from your hand to the Graveyard to target 1 of your banished monsters; add that target to your hand.

Gem-Knight Amber

This card is treated as a Normal Monster while face-up on the field or in the Graveyard. While this card is face-up on the field, you can Normal Summon it to have it become an Effect Monster with this effect.
● Once per turn: You can banish 1 "Gem-" monster from your Graveyard to target 1 "Gem-Knight" card in your Graveyard; add that target to your hand.

Gem-Knight Iolite

Send, from your side of the field to the Graveyard, the Fusion Material Monsters that are listed on a "Gem-Knight" Fusion Monster Card, then Special Summon that Fusion Monster from your Extra Deck. (This Special Summon is treated as a Fusion Summon.) When you do: Banish this card from the Graveyard to target 1 "Gem-Knight" Fusion Material Monster used for the Fusion Summon; the Fusion Summoned monster gains that monster's ATK until the End Phase.

Particle Fusion

Send, from your hand or your side of the field to the Graveyard, the Fusion Material Monsters that are listed on a "Gem-Knight" Fusion Monster Card, then Special Summon that Fusion Monster from your Extra Deck. (This Special Summon is treated as a Fusion Summon.)

Pyroxene Fusion

Hidden Arsenal 5: Steelswarm Invasion

Tribute 1 "Gem-Knight" monster, then target 1 "Gem-Knight" monster in your Graveyard; Special Summon that target from the Graveyard.

Gem-Enhancement

His Sapphire power commands the waters to protect him from attack. His comrades trust in his silent protection.

Gem-Knight Sapphire

Photon Shockwave

You can banish this face-up card you control and 1 face-up Normal Monster you control to target 1 "Gem-Knight" Fusion Monster in your Graveyard; Special Summon it from the Graveyard.