The Rainbow Wing IS a key item to obtain Ho - Oh. Just like the silver wing for lugia.
you get it once and it will be a key item. You cannot be lost.
you need the silver wing key item
You can't because the Rainbow Pass is a Key Item which can't be traded without a hack or glitch.
In Pokémon FireRed, you can catch Ho-Oh by first obtaining the Rainbow Wing, which is a key item you receive by completing the Sevii Islands quest. After acquiring the Rainbow Wing, head to the Ho-Oh's location at the top of the Bell Tower on the Island 8 (also known as the "Navel Rock"). There, you can encounter and attempt to capture Ho-Oh. Make sure to prepare adequately, as it can be a challenging battle!
The rainbow pass is a key item in Pokemon FireRed version. To trigger the events to get it, you first need to own 60 different Pokemon.
key item.
To access the back floor in the Gallery of Time in Dark Cloud, you need the Chronicle 2 key item. This item is obtained by completing the Rainbow Butterfly Woods level as Xiao.
the rainbow wing is your key into the bell tower. you just walk in and as you talk to the monk blocking your way, it will hover above your head and he will let you through. go through the tower until you get to the roof. the kimono girls will summon ho-oh with the help of your clear bell (if your playing soulsilver and beat the elite 4, you don't need a clear bell) in heartgold ho-oh is level 45, in soulsilver he's level 70, but you can only catch him once you've reached kanto and gotten the rainbow wing. (same for catching lugia in heartgold)
Key Item was created in 1968.
rainbow
You can't delete a key item!
A Key Item is an item in the Key Items Pocket that you can register and use by only pressing the X button.