From Miko, head north-east into the Burning Forest. Once there, use careful luring to clear out the entrance area. In general each group in the forest is comprised of two Mahgo Hydras, two Ancient Skales and one Smoke Walker. They move at different speeds so it may appear they are different patrols, but they are all connected. As such, when luring a group, it is best to just strike one creature, then pull back and see exactly how big the patrol is. After killing all four groups, return to Miko for your reward using the same path you came in via.