![Gem-Knight Aquamarine [HA05-EN020] Secret Rare Colorless[-30] by using this face-up card](https://cdn.shopify.com/s/files/1/0643/5648/3327/products/8f741336-dd74-55ac-999c-bd0ba3058e85.png?v=1652405550)
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by using this face-up card you control as the Xyz Material
If this face-up Fusion Summoned card in its owner's control leaves the field because of an opponent's card effect: You can Special Summon 1 "Ultimate Ancient Gear Golem" from your Extra Deck
add 1 "Polymerization" from your Graveyard to your hand
Set: Sun & Moon: Guardians Rising Type: Water Rarity: Secret Rare Retreat cost: Colorless
Set: POP Series 3 Type: Fire Rarity: Uncommon Retreat cost: Colorless
Gem-Knight Aquamarine [HA05-EN020] Secret Rare Colorless[-30] by using this face-up cardSet: Hidden Arsenal 5: Steelswarm Invasion Card type: Fusion Effect Monster Rarity: Secret Rare Attack: 1400 Defense: 2600 "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 it to the hand.