Arisen Gaia the Fierce Knight

Warrior/Effect

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.

Charging Gaia the Fierce Knight

Warrior/Effect

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.

Gaia The Fierce Knight

Warrior/Normal

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

Gaia the Fierce Knight Origin

Warrior/Effect

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 Magical Knight

Warrior/Effect

(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 Mid-Knight Sun

Warrior/Effect

You can only use each effect of "Gaia, the Mid-Knight Sun" once per turn. ? You can Tribute 1 other LIGHT monster you control; 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 Polar Knight

Warrior/Effect

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.

Galloping Gaia

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.

Lord Gaia the Fierce Knight

Warrior/Effect

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.

Soldier Gaia The Fierce Knight

Warrior/Effect

(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.

Swift Gaia the Fierce Knight

Warrior/Effect

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

Curse of Dragon

Dragon/Normal

Curse of Dragon, the Cursed Dragon

Dragon/Effect

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 Dragonfire

Dragon/Effect

If this card is Normal or Special Summoned: You can target 1 Field Spell Card on the field; destroy it. Once per turn: You can Fusion Summon 1 Fusion Monster from your Extra Deck, using monsters you control as Fusion Materials, including this card.

Polymerization

Fusion Summon 1 Fusion Monster from your Extra Deck, using monsters from your hand or your side of the field as Fusion Materials.

Greater Polymerization

Fusion Summon 1 Fusion Monster from your Extra Deck, using 3 or more monsters from your hand or field as Fusion Material, and if you do, it gains these effects.
• This card cannot be destroyed by card effects.
• If this card attacks a Defense Position monster, inflict piercing battle damage.

Super Polymerization

Discard 1 card; Fusion Summon 1 Fusion Monster from your Extra Deck, using monsters from either side of the field as Fusion Materials. Cards and effects cannot be activated in response to this card's activation.

Gaia Dragon, the Thunder Charger

Dragon/Xyz/Effect

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 Drake, the Universal Force

Beast-Warrior/Fusion/Effect

Gaia Knight, the Force of Earth + 1 non-Effect Synchro Monster // This card cannot be targeted or destroyed by the effect(s) of an Effect Monster.

Gaia Knight, the Force of Earth

Warrior/Synchro

1 Tuner + 1 or more non-Tuner monsters

Gaia Saber, the Lightning Shadow

Machine/Link

2+ monsters

Gaia the Dragon Champion

Dragon/Fusion

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

Gaia the Magical Knight of Dragons

Dragon/Fusion/Effect

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.

Sky Galloping Gaia the Dragon Champion

Dragon/Fusion/Effect

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.

Curse of Dragon, the Magical Knight Dragon

Dragon/Fusion/Effect

1 Warrior monster + 1 Level 5 or higher Dragon monster
If you Fusion Summon a Level 7 Dragon Fusion Monster, you can also banish monsters from your GY as material. If this card is Fusion Summoned: You can target 1 Spell/Trap in your GY that mentions "Gaia the Dragon Champion"; add it to your hand. You can only use this effect of "Curse of Dragon, the Magical Knight Dragon" once per turn.