You cannot evolve Flaafy into Manaphy.
Flaafy only evolves into Ampharos, and Phione only evolves into Manaphy.
level 30
Evolve from Mareep. You get Mareep on Route 32
You level it up until it is lv.30
flaafy evolves at lvl 30
Flaafy will evolve into Ampharos when it reaches level 30
Um...Ampharos is the evolve form of Flaafy...and Flaafy is the evolve form of Mareep -...-
It evolve into Ampharos
lvl 30
Flaafy evolves at level 30
The only legendary eggs you can get in SoulSilver are Phione eggs. You get these by breeding Manaphy at the day-care with a Ditto. You get a weird looking egg which hatches into Phione. Phione doesn't evolve into Manaphy.
level 30
It has to be lvl30.