Northwind Field

Final Floor: 30F
Unlock Method: Defeat Raikou in Lightning Field
Initial Level: -
Maximum Teammates: 3
Items: Yes
Check Map: No
Opponents Able to Join: Yes

You'll first encounter Suicune in Northwind Field after defeating Raikou in the Lightning Field. Your first encounter has it enfuse colour into the Rainbow Wing, but after you have recruited Ho-Oh, you can return there and battle it again. When you do, it will join you and, if you haven't already received it, give you the Sacred Field Camp