I hear a person running, when i look around a tree i can see they have a Shaymin.
I whisper to myself: "This would be a pleasant surprise for The Boss"
I call out my Flygon and tell it to fly ahead so we would lie ahead of the running person. Once i am about 10 meters away from the person, i call out my Snorlax to use Headbutt. Snorlax headbutts the person and they fly, with Shaymin, against a tree. The person is knocked out and Shaymin is, due to the Headbutt, too weak to resist. I get it, throw it in a bag, and fly away on my Flygon.