Due to its high casting cost, I believe 1 or 2 is the correct number for Nightmare
Some decks are so fast, or so non-interactive, that your expensive two-for-ones are still stuck in your hand, having done nothing, at the point that a game ends
Senior game designer and TMNT set design lead Eric Englehard says the blue Rare Krang is meant to capture his mad scientist vibes (and in the background, you'll see various artistic iterations of his mecha-suits from the design team), while his Utrom Warlord Mythic card highlights how much of a threat Krang can be to the Turtles
This card exceeds the English price tag by a significant margin, likely due to the combination of higher print quality and the Pokemon's superior popularity among Japanese collectors
I will try to spend less time on the obvious ones we all know why they are good and focus on the relative qualities of the less commonly used options
New Multi Color Leader cards are also in the lineup