Many Fiend and Spellcaster Type monsters hold the Dark Attribute
18 Number 2: Ninja Shadow Mosquito A Rank 2 monster made up of two or more level 2s, Ninja Shadow Mosquito has some pretty powerful abilities
This also applies in reverse to the three Synchro Monsters automatically obtained before the match against Team New World - the player is supposed to not keep the cards and they will disappear if the player exits the Deck Editor with the cards not being in their Extra Deck or Side Deck, but saving a Deck Recipe that has any of those cards will let the player keep them
Limited Cards Limited Astrograph Sorcerer X DARK Level 7 [ Spellcaster / PendulumEffect ] ATK 2500 DEF 2000 P Scale 1 During your Main Phase: You can destroy this card, and if you do, take 1 "Stargazer Magician" from your hand or Deck, and either place it in your Pendulum Zone or Special Summon it
So he goes for the counter, I suppose that could have KO'd me if he got it
It's actually pretty good because I don't have much backrow hate and I tend to have a lot of cards trapped in my hand anyway