Hint: Find/Capture/Enslave Ho-Oh
After you beat the Pokemon League, go to Viridian City and locate
the old man near the Poke Mart. Talk to him when you have all the
badges, and he will give you the Rainbow Wing. Go to Ecruteak City
and enter the Tin Tower. The man blocking the stairs will see that
you have the Rainbow Wing and let you through. Work through all the
floors to the roof. Theres a single Ho-oh (L40).
Hint: Get Baby Pokemon
To get a baby Pokemon, you need to go to the daycare center right
below Goldenrod City. Give a male and female to each of the two
people. Give the following Pokemon to get the listed baby Pokemon:
2 Pikachus: Pichu 2 Clefairys: Cleffa 2 Jigglypuffs: Igglypuff 2
Electabuzzes: Electkid Mr.Mime & Jynx: Smootchum 2 Magmars:
Magby
Hint: Capture Lugia
To capture Lugia, you need to go to the Whirlpool Islands near
Cianwood Island. But first you need HM06 and the Silver Wing by
defeating Team Rocket in the city before BlackThorn, and also
defeating Team Rocket in the Radio Tower. Then after you get those
items,go to Whirlpool Islands. Use Whirlpool to get past the
whirlpools, then work your way through the maze. A Lugia (Lv.40)
should be at the end.
Hint: Get Celebi
To get Celebi, you have to catch Suicune, Entei, and Raikou, and
then trade in Articuno, Zapdos, and Moltres. Then, go to Viridian
City in Kanto. Outside of the Battle Station there should be a
woman. Talk to her, and shell give you a GS Ball. Go back to Ilex
Forest, and get to the shrine. Put the ball in the shrine, and
Celebi (level 5) will come out of it.