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|Number of cards||15|
|Cover card||Dark Chimera|
|Release date||February 13, 2013|
This Fiend-themed deck will give nightmares to the opponents from chapters 16 to 18. Complete chapter 15 to unlock.
Each Nightmarish Fiends contains 15 cards in total. The number of card of each rarity are as follows:
|Baron of the Fiend Sword||2|
|Dark King of the Abyss||1|