I know using Darkrai
's "Nightmare Star" Ability is optional, but can I choose to attach only one Darkness Energy card if I have two in my hand?
Since the contents of the hand is not public knowledge, you may attach only one if you wish.





x2
-20Nightmare Star
When you play this Pokémon from your hand onto your Bench during your turn, you may attach 2
Energy cards from your hand to it.



Abyssal SleepYour opponent's Active Pokémon is now Asleep. Your opponent flips 2 coins instead of 1 between turns. If either of them is tails, that Pokémon is still Asleep.
I know using Darkrai
's "Nightmare Star" Ability is optional, but can I choose to attach only one Darkness Energy card if I have two in my hand?
Since the contents of the hand is not public knowledge, you may attach only one if you wish.
If Darkrai attacks with "Abyssal Sleep", can Pokemon Ranger clear the effect of flipping 2 coins when Asleep?
Asleep, Poisoned, etc. are Special Conditions, regardless of how many coins you need to flip or how much damage the poison condition does. Therefore they are not altered by Pokemon Ranger.