Go to the Nacrene City Pokemon Gym. Then, Hawes will give you a tour of the museum. Go through the entrance he leads you to. After that, Clide will give you a Fresh Water. Answer the questions in the books on the bookshelves throughout the gym. After you read the last answer, you'll discover a hidden staircase. Go down the staircase and to Lenora and press A.
in the nacrene gym
Take it to the museum in Nacrene City
You can get it through the Main Story, like this:Received from Lenora in Nacrene City after clearing Dragonspiral Tower. Pokemon White onlyOtherwise, you need to hack/cheat to get the Pokemon Black one.
You cannot catch a Cottonee but you can trade a Petilil for one in either Nimbasa City or Driftveil City I am not sure which one. You can also trade with a friend who has Black. It is the other way around for Black.
Cheren
The Black Stone is on display at Nacrene City's museum.
In Nacrene city, the city after Striaton city.
nacrene city
in the nacrene gym
There is no Pokemon Center north of Nacrene City. The next Pokemon Center after Nacrene City is through pinwheel forest and across the Skyarrow Bridge in Castelia City. According to the in game town map Castelia City is west past Nacrene City. There is nothing north of Nacrene City.
Take it to the museum in Nacrene City
You can get it through the Main Story, like this:Received from Lenora in Nacrene City after clearing Dragonspiral Tower. Pokemon White onlyOtherwise, you need to hack/cheat to get the Pokemon Black one.
You cannot catch a Cottonee but you can trade a Petilil for one in either Nimbasa City or Driftveil City I am not sure which one. You can also trade with a friend who has Black. It is the other way around for Black.
Catch a Petilil in Pinwheel Forest (After 2nd Gym Leader) then trade it with a girl in one of the houses in Nacrene City.
It is West of Nacrene City and South of Skynarrow Bridge.Pinwheel Forest is West of Nacrene City and South of Skyarrow Bridge.
It evolves into Swoobat when leveled up with high happiness. There is a Girl in Nacrene City who can judge your Pokemon's happiness. She lives in the Green Warehouse to the right of the Pokemon center.
Shaga in Pokemon Black, Iris in Pokemon White.