the best item you can give to zecrom is a berry for making ground weak
The Special Key is a key item in Pokemon Diamond. You can find this item in a warehouse in Veilstone City.
The everstone, which can be traded as a held item from other games.
An important item is the azure flute which is used to get arceus at mt.Coranet.
Sorry, but Eldeon is neither a Pokemon or item.
You dont. DARKRAI (no C, dude) was found in Diamond, Pearl, and Platinum if you had the special Members Key item, which was given away at special events. Check the Pokemon website to see when they will be giving them out next.
No where get an electabuzz and evolve it using some special item
You need a special item from Nintendo to unlock the item to get to the island where you can catch it.
What's a ribonson? Is it like a special item?
Yes. You must give the item to a Pokemon, then trade said Pokemon and unequip said item.
yes but you need a special item
No, unless you want to trade a Pokemon holding an item that works. But just by item, no it doesn't work like that.
No, there are no legendary Pokemon there, just a rare item.