one of the 3 sprites uxie, mesprit or azlef but i cant rember which one
No
Lake Valor (after you've been to the Distortion World)
no u could find swinub only in Pokemon platinum.
There isn't a place called Lake Cavern, unless you meant the caverns in Lake Acuity, Lake Valor, and Lake Verity. Every lake has the cavern in the center of the lake and will have the trio inside in each when they have been released.
beat Cyrus
Lake Valor is the big lake above Pastoria city.
Go to lake valor...
In the lake valor cavern
No
sorry but u cant
lake valor [use pok'e radar]
Beat the grunts
by a shiny stone in lake valor
In Platinum, Houndour is found on Route 214 and in Lake Valor.
You can find it at Lake Verity or Lake Valor by using the Pokeradar.
Lake Acuity and Lake Valor. In the grass with the Pokeradar.
Azelf is in lake Valor near Pastoria city