Gaia Knight, the Force of Earth (Red) [DL17-EN011] Rare World Championship JPP Cards Set: Stardust Overdrive Card type:

Set: Stardust Overdrive Card type: Gemini Monster Rarity: Ultimate Rare Attack: 1900 Defense: 1200 This card is treated as a Normal Monster while face-up on the field or in the Graveyard

Must be Special Summoned (from your hand) by having exactly 5 EARTH monsters in your GRaveyard

except "Gladiator Beast Alexander"

Set: Tournament Pack 8 Card type: Normal Trap Rarity: Ultra Rare Attack: 0 Defense: 0 You can only activate this card when your opponent declares an attack

you can even find:

Gaia Knight, the Force of Earth (Red) [DL17-EN011] Rare World Championship JPP Cards Set: Stardust Overdrive Card type:Set: Duelist League Promo Card type: Synchro Monster Rarity: Rare Attack: 2600 Defense: 800 1 Tuner + 1 or more non Tuner monsters