Cresselia appears in the grasses of Sinnoh (like the three Legendary Dogs and Mespirit), but only after you go to Full Moon Island. To get to Full Moon Island, you must get the National dex, and go to Canalave City. You must then search for the guy that takes you to Iron Island's family. Next, go to his house, and talk to his son, who is asleep, and having a nightmare. Then, talk to the sailor's wife, and talk to him after. He will then take you to Full Moon Island.
If you are trying to hatch an egg and have a Pokemon with the Magma Armor or Flame Body ability in your party, then it will cut the hatch time in half.
Go to the GTS in Jublife and put the Pokemon you want to evolve up for offer, make a different trade while it is still up for offer, and then take it back. It will evolve like someone traded it to you.
Your trainer card when you begin the game is colored red. When you complete certain tasks, stars are added onto your card as a sort of prestigious recognition for your efforts. In the same way as in the previous generation of Pokemon, these stars will be accompanied by the change of your card's color. They are typically obtained in order.
Blue Trainer Card (One Star) Beat the Elite Four Bronze Trainer Card (Two Stars) Defeat all of the Master Rank Contests Silver Trainer Card (Three Stars) Complete the Underground Flag minigame with friends Gold Trainer Card (Four Stars) Capture 482 different Pokemon Black Trainer Card (Five Stars) Win 100 times in a row at the Battle Tower
