Nightmare is bad...

[fizzbog]

Nightmare... The card that, in exchange for 2 of your turns, can deal 18 damage.

The basic problem with Nightmare is that you can either choose to add attacks or blocks to yur hand next turn,but there is a 50% chance it will then be useful. The fact is, the cards you add to your hand cost energy. Not only do you pay for nightmare, but you pay for 3 cards that you have to cast next turn. On the vast majority of my turns, I use 1 or 2 of the copies nightmare gave me. Never three.

The only use for nightmare is doing it with cards like quick slash to draw cards and deal a bit of damage. It is only useful for 0 cost cards, but in that case, why cast it? At most, you will get 12 damage with shivs out of it for free next turn, in exchange for an entire turn of not blocking. Or, you will get 12 block on your next turn, which you may not end up needing.

I know it can be OK in combo decks or when you have Sozu, Ectoplasm, etc. but still... I think it should add 4 copies to your hand, 5 if upgraded. Then, it might justify losing an entire turn. But really, doppleganger is 1000000000000000000000000x better.

[Username]

Nightmare has plenty of uses. With cards like bullet time, setup, outmanuever, and doppleganger, you have a lot of ways to make the cards you get with nightmare playable on your next turn.

Additionally, you can use nightmare to copy powers like footwork and noxious fumes, which can both make a combat substantially easier. If you aren't copying a power, and choose to get something like escape plan, you still add more copies of a good card to your deck, to be drawn later.

[fizzbog]

Originally posted by All7ninjas:

Nightmare has plenty of uses. With cards like bullet time, setup, outmanuever, and doppleganger, you have a lot of ways to make the cards you get with nightmare playable on your next turn.

Additionally, you can use nightmare to copy powers like footwork and noxious fumes, which can both make a combat substantially easier. If you aren't copying a power, and choose to get something like escape plan, you still add more copies of a good card to your deck, to be drawn later.

Nightmare is in many ways a 3 cost Dual wield. However, the real issue is that you spend essentially a turn in order to get powers. I would much rather spend that turn blocking or dealing damage. While the silent requires a long-term playstyle, I find that nightmare is too expenisve to be useful. Sure, outamnuever, doppleganger, and more can help pay for it, but in many ways it is a downgrade to doppleganger.

Additionally, the cards you get can't be played with cards like outmanuever or doppleganger unless you have extra energy from a boss trinket because Nightmare costs 3. Or, you could upgrade doppleganger to cast it for 0.

To sum up my thoughts, Nightmare is just too expensive to make it worthwile. It takes a turn of doing nothing to add 3 useful powers to your deck, or draw more cards, or, like is often the case, you have no good targets for it, so it sits in your hand like an injury.

[SoM]

Have you heard the word of poison lord and savior, Catalyst? An upgraded Nightmare means even at 3 Energy you get to play 4 Catalyst in two turns. That's 81 times the poison with Catalyst+. It basically hands you the win.

As mentioned Setup and Bullet Time basically makes Nightmare free. Bullet Time also makes Nightmared cards free. From your reply you don't seem to have come across this combo yet.
Silent also has natural ways to keep cards in hand, so you wouldn't need to waste Nightmare if you don't have the combo card.

[Keyen]

Nightmare is ruining the enjoyment of the game. It's not weak, in contrary, it's 100% broken and should be nerfed HARD. An addition of Nightmare+ can change your run from "correct-good" to "so broken it's not even remotely fun anymore". So I stopped using it.

Dual wield can't even begin to compare, because DW is 2 cards while nightmare is 4, and DW can't be Burst. And a Bursted Nightmare on:
-Accuracy
-Footstep
-Catalyst
-Noxious Fume
is just insta win.