You need Suicune?
You know it's found in the Trackless Forest of both OR and AS.
I think there a some special conditions you have to meet like day of the week or time of day.
I like TOO many!
There are a few I distinctly dislike...
Scrafty and Scraggy, Mr. Mime, Miltank, Clamperl's evovolutions and few others.