Gem-Knight Quartz is a Super Rare Effect Monster card from Yu-Gi-Oh! (Power of the Elements, POTE). Current market price: $0.16.
Super Rare
Power of the Elements (POTE)
Card Text
If your opponent controls a monster: You can discard this card; Set 1 "Fusion" Continuous Spell directly from your Deck, also you cannot Special Summon monsters from the Extra Deck for the rest of this turn, except "Gem-Knight" monsters. If this card is used as material for a Fusion Summon, and sent to the GY or banished: You can add 1 "Gem-Knight" monster from your GY to your hand, except "Gem-Knight Quartz". You can only use each effect of "Gem-Knight Quartz" once per turn.
