elbow grease and determination
train it at the Pokemon league
Level 55
in leafgreen the elite four because i have evolved mine there and creuluen cave in leafgreen. and in emerald sky pillar and the elite four hoped that helped! -Drew
Train a dratini to level 36 then it will become dragonair.
55
train to 55
Dragonair does not learn Dragon Rush in Pokemon Leafgreen. However, it can learn the move in Pokemon Diamond, Pearl and Platinum at level 39.
dragonair evolves on LV 55
You cant. You have to trade it from Firered or Leafgreen.
Dragonair evolves into Dragonite at level 55.
Dragonair cannot be found in the wild, nor its pre-evolution Dratini. (Which could have been used to evolve into Dragonair.) You would need to trade for it from someone who owns FireRed or LeafGreen.
Train it to level 55.