Card Tips:Gem-Knight Ruby
- Use cards like "Birthright", "Silent Doom", "Call of the Haunted" and "Soul Resurrection" to Special Summon powerful "Gem-Knights" like "Gem-Knight Garnet" or "Gem-Knight Crystal", then Tribute them for this card's effect.
- Equip this card with "Fusion Weapon" to increase its ATK to 4000 and the ability to pierce. It can also be further increased with its effect.
- Tribute "Gem-Knight Amethyst" to attack safely with 4450 ATK and piercing.
- Using "Gem-Knight Obsidian" as this card's Fusion Material allows yourself to bring back "Garnet" to be Tributed, without losing your resources.
- Tributing "Gem-Knight Zirconia" to the effect of "Ruby" will make it 5400 until the End Phase, which means trouble for most any monster; Attack Position OR Defense Position.
- Use this monsters effect to Tribute" Gem-Knight Master Diamond", for a HUGE attack, then use "Gem-Enhancement" on "Ruby" to Summon back "Master Dia". Alternatively, the effect of "Dia" can be used to remove "Gem-Knight Amethyst", and then Tribute "Dia" with the effect of "Ruby" for an safe attack.
