Maze of Muertos

''A knight whose horse travels faster than the wind. His battle-charge is a force to be reckoned with.''

Gaia The Fierce Knight

(This card is always treated as a "Millennium" and "Gaia The Fierce Knight" card.)
If a Level 5 or higher Monster Card is on the field, you can Normal Summon this card without Tributing. The Level of any monster your opponent Normal or Special Summons in Attack Position, while this card is in your Monster Zone, is increased by 7. When your opponent activates a monster effect (Quick Effect): You can send 1 other face-up Level 5 or higher Monster Card you control to the GY; negate the activation, and if you do, destroy that card. You can only use this effect of "Heart of Gaia" once per turn.

Heart of Gaia

Battles of Legend: Chapter 1

2 Level 7 monsters
You can also Xyz Summon this card by using a Rank 5 or 6 Xyz Monster you control as material. (Transfer its materials to this card.) If this card attacks a Defense Position monster, inflict piercing battle damage.

Gaia Dragon, the Thunder Charger

Speed Duel Tournament Pack 3

You can Normal Summon this card without Tributing. If this card is Normal Summoned without Tributing, its original ATK becomes 1900. If this card is Tributed: You can add 1 "Black Luster Soldier" monster from your Deck to your hand. You can only use this effect of "Charging Gaia the Fierce Knight" once per turn.

Charging Gaia the Fierce Knight

2021 Tin of Ancient Battles

You can Tribute 1 monster; Special Summon 1 "Gaia The Fierce Knight" monster, or 1 Level 5 Dragon monster, from your hand or Deck. You can only use this effect of "Artillery Catapult Turtle" once per turn.

Artillery Catapult Turtle

If this card is Normal or Special Summoned: You can add 1 Spell/Trap from your Deck to your hand, that specifically lists the card "Gaia the Dragon Champion" in its text. If this card is sent to the GY: You can target 1 "Gaia the Dragon Champion" in your Monster Zone; negate the effects of face-up monsters your opponent currently controls with ATK less than or equal to it until the end of this turn. You can only use each effect of "Curse of Dragon, the Cursed Dragon" once per turn.

Curse of Dragon, the Cursed Dragon

This card can be treated as 2 Tributes for the Tribute Summon of a Warrior monster. You can only use each of the following effects of "Gaia the Fierce Knight Origin" once per turn. You can send 1 Level 5 or higher monster from your hand to the GY; Special Summon this card from your hand. During the Battle Phase (Quick Effect): You can banish this card from your GY, then target 1 monster on the field whose current ATK is different from its original ATK; its ATK becomes its original ATK.

Gaia the Fierce Knight Origin

(This card is also always treated as a "Gaia The Fierce Knight" card.)
If you control no monsters, or your opponent controls a monster with 2300 or more ATK, you can Normal Summon this card without Tributing. If this card is Normal or Special Summoned: You can Special Summon 1 Level 5 Dragon monster from your hand or GY in Defense Position. You can only use this effect of "Gaia the Magical Knight" once per turn.

Gaia the Magical Knight

1 "Gaia The Fierce Knight" monster + 1 Level 5 Dragon monster
This card's name becomes "Gaia the Dragon Champion" while on the field. You can only use each of the following effects of "Gaia the Magical Knight of Dragons" once per turn. During the Main Phase (Quick Effect): You can target 1 other card on the field; this card loses exactly 2600 ATK, and if it does, destroy that card. When this card destroys an opponent's monster by battle: You can make this card gain 2600 ATK.

Gaia the Magical Knight of Dragons

(Quick Effect): You can Tribute 1 Dragon Fusion Monster; Special Summon this card from your hand. If this card is Special Summoned: You can target 1 Attack Position monster on the field; change it to Defense Position. You can Tribute this card; add 1 Level 7 or higher Warrior monster from your Deck to your hand, except "Soldier Gaia the Fierce Knight". You can only use each effect of "Soldier Gaia the Fierce Knight" once per turn.

Soldier Gaia the Fierce Knight

Fusion Summon 1 Dragon Fusion Monster from your Extra Deck, using monsters from your hand or field as Fusion Material. If you Special Summoned "Gaia the Dragon Champion" by this effect, it gains 2600 ATK, also it can make up to 2 attacks on monsters during each Battle Phase.

Spiral Fusion

Speed Duel: Battle City Box

If this is the only card in your hand, you can Normal Summon it without Tributing.

Swift Gaia the Fierce Knight

Maximum Gold

"Gaia The Fierce Knight" + "Curse of Dragon"

Gaia the Dragon Champion

Rise of the Duelist

Your opponent cannot activate cards or effects during the Battle Phase while "Gaia the Dragon Champion" is in your Monster Zone. You can activate 1 of the following effects.
● You can reveal 1 "Gaia The Fierce Knight" monster in your hand; add 1 Level 5 Dragon monster from your Deck to your hand.
● You can reveal 1 Level 5 Dragon monster in your hand; add 1 "Gaia The Fierce Knight" monster from your Deck to your hand.
You can only use this effect of "Galloping Gaia" once per turn.

Galloping Gaia

While "Gaia the Dragon Champion" is in your Monster Zone, your opponent's monsters can only target "Gaia the Dragon Champion" for attacks. When an attack is declared involving your "Gaia the Dragon Champion": You can target 1 card on the field; destroy it. You can only use this effect of "Spiral Discharge" once per turn.

Spiral Discharge

Target 1 Level 7 or lower Dragon monster in your GY; Special Summon it. If you Special Summoned a "Gaia the Dragon Champion" by this effect, your opponent cannot target it with card effects, and it cannot be destroyed by their card effects. You can only activate 1 "Spiral Reborn" per turn.

Spiral Reborn

Speed Duel Starter Decks: Match of the Millennium

A wicked dragon that taps into dark forces to execute a powerful attack.

Curse of Dragon

If "Gaia The Fierce Knight", "Swift Gaia the Fierce Knight", or "Gaia the Dragon Champion" you control attacks a Defense Position monster, inflict piercing battle damage to your opponent. If "Gaia the Dragon Champion" inflicts battle damage with this effect: Draw 2 cards, then discard 1 card.

Spiral Spear Strike

Yu-Gi-Oh! The Dark Side of Dimensions Movie Pack Secret Edition

If your opponent controls a monster and you control no monsters, you can Special Summon this card (from your hand). Once per turn, if a monster(s) with ATK higher than this card is Special Summoned to your opponent's field (except during the Damage Step): You can make this card gain 700 ATK until the end of this turn.

Lord Gaia the Fierce Knight

Duel Devastator

Gaia Saber, the Lightning Shadow

Advanced Demo Deck Extra Pack

Gaia Knight, the Force of Earth

2016 Mega-Tin Mega Pack

If your opponent controls more monsters than you do, you can Normal Summon this card without Tributing. If this card is Tributed: You can Special Summon 1 "Black Luster Soldier" monster from your hand or Graveyard. You can only use this effect of "Arisen Gaia the Fierce Knight" once per turn. When you Ritual Summon a "Black Luster Soldier" monster, you can banish this card from your Graveyard as 1 of the monsters required for the Ritual Summon.

Arisen Gaia the Fierce Knight

Millennium Pack

1 "Gaia The Fierce Knight" monster + 1 Dragon-Type monster
This card's name becomes "Gaia the Dragon Champion" while it is on the field. If this card is Special Summoned: You can add 1 "Spiral Spear Strike" from your Deck or Graveyard to your hand. When this card declares an attack on an opponent's monster: You can change the battle position of that opponent's monster.

Sky Galloping Gaia the Dragon Champion

Duelist Alliance: Deluxe Edition

You can only use each effect of "Gaia, the Mid-Knight Sun" once per turn.
● You can Tribute 1 other LIGHT monster; add 1 Level 4 DARK Warrior-Type monster from your Deck to your hand, then send 1 card from your hand to the Graveyard.
● You can banish 1 DARK monster from your Graveyard, then target 1 monster on the field; it loses 500 ATK until the end of your opponent's turn.

Gaia, the Mid-Knight Sun

You can only use each effect of "Gaia, the Polar Knight" once per turn.
● You can Tribute 1 other DARK monster; add 1 Level 4 LIGHT Warrior-Type monster from your Deck to your hand, then send 1 card from your hand to the Graveyard.
● You can banish 1 LIGHT monster from your Graveyard, then target 1 monster you control; it gains 500 ATK until the end of your opponent's turn.

Gaia, the Polar Knight

Starstrike Blast

1 "Gaia Knight, the Force of Earth" + 1 non-Effect Synchro Monster
This card cannot be targeted by, or destroyed by, the effects of Effect Monsters.