Gem-Knight Ruby is a Duel Terminal Ultra Parallel Rare Fusion Monster card from Yu-Gi-Oh! (Duel Terminal 5a, DT05). Current market price: $0.17.
Duel Terminal Ultra Parallel Rare
Duel Terminal 5a (DT05)
Card Text
"Gem-Knight Garnet" + 1 "Gem-Knight" monster
Must first be Fusion Summoned with the above Fusion Material Monsters. Once per turn: You can Tribute 1 face-up "Gem-" monster; this card gains ATK equal to the Tributed monster's ATK on the field, until the End Phase. If this card attacks a Defense Position monster, inflict piercing Battle Damage to your opponent.
