Use a fire type pokemon, fire beats steel.
defeat the Elite Four at the indigo league
the sinnoh league champion. defeat her and become the champion.
Lugia can be found in the League Champion- Steven map.
Find It In League Champion - Steven on the online Pokemon Indigo
Pokemon Crystal allows you to travel to Kanto and eventually participate in the Indigo League at the Indigo Plateau, after becoming Johto League Champion.
You can find lugia on the league champion steven map.
You can defeat the Pokemon League by defeating the Elite Four and the Champion in Pokemon Soul Silver.
you have to defeat the elite four and then the champion
all you have to do is to beat all the 8 gym leaders! Then go to New Bark and swim right... Across that looooong path you will find Indigo Plateau, where the Champion is.
You can find Ho-Oh at League Champion- Steven map.
You can find Ho-oh at the Pokemon League champion Steven's place, where there's Lugia too.
if you defeated the elite four and champion you can see him in at indigo plateu (pokemon league)