Unlock Fiary Field by giving the clear wing you got from spinda to zatu in the Grate canion I think you get what i mean.
ITS ENTEI
eventually, yes
entei
Go to the kennel
45
to get entei you have to get the three fields
they are both level 30
the three islands
first entei then raiku then suicune
Floor 30
just keep on fighting it until it asks you to join
You beat Entei in Fiery Field. NOTE: You'll need Surf.