Card Tips:Gaia Knight, the Force of Earth

To summon Gaia, Knight of the Earth easily summon Marauding Captain then use his effect to summon a Level 3 Synchro monster preferably Tune Warrior then Synchro summon Gaia, Knight of the Earth.

Because Tune Warrior is a Warrior-Type monster you should include him and Gaia, Knight of the Earth in some sort of Warrior Synchro Deck.

Gigantech Fighter is also a good option.