Yes, Dark Void would effect Cresselia. Dark Void would fail if it misses, the opposing Pokemon has the Insomnia ability, or if the opposing Pokemon is already asleep.
Darkrai
dark void of course
After a little while into the post game, Cresselia starts appearing into your dreams or at least Darkrai is. He was pretending to be Cresselia. Cresselia is really good, but the Cresselia in the dreams are Darkrai's doing.
Do a few missions after recruiting cresselia (straight after beating darkrai in the dark crater)
You get cresselia eventually once you beat all the treetops.
Dark Void happened in 360.
beat Darkrai in DARK CRATOR and then Cresselia will join you.
Dark Void Zero happened in 2010.
Dark Void was created on 2010-01-19.
Dark Void Zero was created on 2010-01-18.
The void was very dark and scary.
no
No, Dusknoir unfortunately cannot learn Dark void.That's because Dusknoir isn't a dark type pokemon...it's ghost. Sorry, but it can't learn Dark Void.
Darkrai learns the move Dark Void at lvl 66. Dark Void puts Pokemon to sleep. It's a very powerful move!! Gotta Catch em' ALL!!
Darkrai
The move Dark Void puts its opponents to sleep however in a double battle it'll put both of its opponents to sleep.
You must get past Dialga and Palkia and have cresselia unlocked to enter dark crater