Effect
When the attached card is played, a copy of that card is generated and added to the hand or deck. As a Super Rare gem, it effectively doubles the impact of any strong card, making it one of the top-tier gems in the game. Attaching it to a high-cost finisher card delivers massive additional damage or resources.
Unlock Condition
Unlocked by playing a total of 1,000 cards. This is a milestone-type unlock that is naturally achieved through extended play.
Best Cards to Attach
Best attached to powerful weapon cards like Thunder Ring or Cross that have high single-use impact. The copied card immediately triggers its effect again, dramatically improving turn efficiency and damage output.
Tier
Tier S — Doubles the effect of any powerful card, making it a top-priority gem after unlocking. Should be considered for attachment in virtually any build.