another simple way to easily do this is get a barkbark and and Roario and "cage"them via stone walls to where they are stuck near each other. Put a halo on the barkbark from Paper pets and one on Roario just in case (my Roario gets glitched sick sometimes) anyways just prod one of them until they get angry and then concentrate on other parts of the garden while they fight. The halos will auto revive them so no worries =D Simple and gets thbe job done