In Icirrus City there is an Old Man in the PokeCenter that will pay Double what the PokeMart will pay for Ores.
Ex. He will buy Nuggets for 10k, where the Mart will only pay 5k.

Star Piece, Star Dust, Nugget, Pearl, Big Pearl, Damp Rock, Heat Rock, etc.

These three need the Leaf, Fire or Water stone in order to evolve. You can obtain one of these stones from a man on the pier to the south of the city entrance in Castelia City.

(Their Japanese names are Yanappu, Baoppu and Hiyappu)

Here's a fast and easy way to level up your pokemons without battling them!

Requirement:
- Unlocked the ability to leave TWO pokemons at the DayCare Centre

Steps:
1. Leave 1 or 2 pokemons at the DayCare Centre (Found outside of Striaton city)
2. Get to Nimbasa city.
3. Go to the "Battle Subway" in Nimbasa and use something to hold down B and the down button. (Or you can hold them down yourself)
Because it's a constant loop, you can walk away for a few hours or just hold it, and the daycare trains your pokemons as you run around in circles!

WARNING:
- Be careful though, if you let it run for too long you may have a level 100 that you never evolved
- Also, pokemons left at DayCare will learn the level up moves as they level up, meaning you won't be able to choose the moves it learns if you leave it there too long

You can fish in the whirlpools and rare pokemon will come out.

Need some Super Potions but low on Poke? Well find a Vending Machine and buy Fresh Water instead. You can only get one at a time, but you are saving 500 Poke by buying Fresh Water instead of Super Potions as they both heal 50 HP.

Side Note:
The guy at the entrance of each gym that tells you what type of Pokemon the Leader uses, will also give you a Fresh Water as a gift.

First, use water-type moves to do double damage and lower itsHP quickly. After that use fighting, poison or bug type moves to lower its HP gradually. Bring many Ultra balls and keep trying until you catch it.

NOTE: Tornadus is only found in Pokemon Black Version and Thundurus is only found in Pokemon White Version.

Another Note: Before you start you must have started the event on Route 7 after beating the Opelucid City Gym.

Step 1: Before you battle him, make sure you have:
a) A fast Pokemon with Thunder Wave or Stun Spore
b) A fast and strong Pokemon that lower his HP safely or a Pokemon with False Swipe
c) A fast Pokemon with Mean Look, Block, Spider Web or the Ability of Shadow Tag
d) Whichever Poke Balls you use. I tend to use ordinary Poke Balls
e) Some Healing Items just in case

Step 2: After you start the event, you should wait for it to be evening (the evening time depends on the season). When it's evening head over to Mistralton City and go north to Route 7. If your legendary Pokemon is here, the sky would become noticeably oranger than usual, then an unusual storm would show up. If he is not there, go back to Mistralton City and try to head up there again. Keep repeating this until you actually battle with him.

Step 3: Here is your battle plan:
a) So when you first encounter your Pokemon use your Thunder Wave or Stun Spore and let him flee
b) Do step 2 again but this time weaken him until you feel he is ready for capture
c) Do step 2 one more but have a Pokemon use Block/Mean Look so he cannot flee
d) Throw all your Poke Balls at him and use your Potions if your Mean Looker is about to faint

Fly to Undella Town when it is the winter season in your game. Make sure that you have a Cincinno in your party, and that you are willing to trade it! Talk to one of the toy makers and he will request you to trade your Cincinno for his Munchlax. Accept the trade and the Munchlax will be holding Leftovers. Enjoy.

you know that mountain on top the gym in iccirus city and how you cant get on it. well you just have to wait until the game turns to winter and then you can go up there:)

...are no longer pointless. If you have the event exclusive Keldeo or Meloetta, then you can teach them special moves like SecretSword and RelicSong, their signature moves. The Moor of Icirrus, along with the battalion trio, you can teach Keldeo SecretSword. With a Relic Crown go to the cafe in Narrow street, Castelia and the guitarist will teach Meloetta RelicSong.

Available after beating the Elite 4 the first time.

Location:
Route 15, there is a building similar to Pal Park of Sinnoh & Kanto where you can connect to past games for the Pokémon after you have obtained the National Pokédex. When you enter the PokéTransfer Lab, you'll get an explanation. You can then access the transferring program from this area whenever you want

Requirement:
- 2 DSs (one with black/white, the other with Diamond, Pearl, Platinum, HeartGold or SoulSilver)

Restrictions:
- No Hold Items - (Game automatically puts them back in your bag)
- The Pokémon cannot know Hidden Moves (Cut, Fly, Surf, Strength, Defog, Whirlpool, Waterfall, Rock Climb) - Do note that you can send Pokémon with Defog through HeartGold & SoulSilver and Pokémon with Whirlpool through Diamond, Pearl & Platinum
- You cannot send Eggs
- You cannot transfer the Spiky-eared Pichu

Pokemon Black have 4 seasons: Spring, Summer, Fall, Winter

Spring -> January, May, September

Summer -> February, June, October

Fall/Autumn -> March, July, November

Winter -> April, August, December

If you want to find out what Pokémon are swarming on what route today then simply check the news ticker in the dividers between routes and cities.

First, use moves that do double damagesuch as Water and Flying type moves. After that lower it`s hp gradually with Bug or Grass type moves. Watch out for the move Quiver Dance, which raise it`s stats. Dusk Balls are effective when you are trying to catch Volcarona. Volcarona is at lv 70 and knows
Silver Wind
Quiver Dance
Heat Wave
Bug Buzz

Terrakion`s ability Justified, makes Terrakion`s attack rise one levelwhen hit by a dark type move. When it`s attack goes up the move sacred sword becomes very powerful, so reduce it`s hp with Normal, Fire or Bug type moves.

While the user of Sky Drop and the targeted Pokémon are in the air, if another Pokémon uses the move Gravity, the move fails. Sky Drop's user will be able to continue to battle as normal, but the Pokémon targeted by Sky Drop won't be able to move until the user of Sky Drop either faints or gets switched out, or the targeted Pokémon takes a hit from an attack.

Sky Drop was banned from random Wi-Fi battles as a result of this glitch.

On rare occasions, when visiting Icirrus City, instead of seeing the snow falling like normal, you will instead see a different kind of weather condition, similar to snow called Diamond Dust. This weather condition is very rare and can only be found specifically in Icirrus City on New Years' Eve.

Diamond Dust also makes appearances on the top of Mt. Silver in HG/SS and in Snowpoint City in D/P/Pt.

During the Winter, if you go to Icirrus City, and enter the southernmost house, there will be a man standing in front of the TV. If you talk to him, he will reveal himself to be an ex-Team Rocket member in a very odd dialect. He claims that he was once part of Team Rocket in a faraway region, and that he tried to revive Team Rocket. This was the same Grunt as the one that stole the Gear from the Generator in G/S/C/HG/SS.

In Castelia city there are 3 trainers at a party that speak 3 foreign languages. I've translated what they say.

German: Ich habe mir nun ein Auto zugelegt! Damit ist die nächeste Stadt auch ganz ohne Orden zum Greifen nah! Es sei denn, ich rassele durch meine Führerscheinprüfung...
English: I have now bought a car! So that the next town is also close enough to touch without orders! Except, I rattling through my driving test...

Italian: Ciao! Ti stai divertendo? Non sentirti in imbarazzo. Parla pure con chi vuoi.
English: Hello! Are you having fun? Do not feel embarrassed. He also speaks with anyone.

Spanish: ¡Es la primera ves que vengo aquí!¡Pero este precioso paisaje hace que me sienta como en casa!¡La próxima vez traeré a mis amigos!
English: It is the first time I come here! But this beautiful landscape makes me feel like home! The next time I'll bring my friends!

In Castelia City, there is a building in which you can find various NPCs representing actual Game Freak members. One of these characters can be challenged to a battle after defeating the Elite Four. This building also houses various goodies and commendations for doing things like completing the Pokedex. To get there, all you need to do is get to the Castelia Pokemon Center. In the roadway leading north (up) just to the east (right) of the center, there is a single building on the right that you can enter. Go inside, and go to the elevator. Go to the 22nd floor, and you will encounter Game Freak!