Silver Creek Side Quests

The Books of Wisdom:

This quest starts with a Combo Master standing outside his house by the well:

Now you need to go North, just above Adelina's house:

 Kill Gulak Thunderstorm and his horde of normal goblins:

Gulak will drop the Compendium of Wisdom on the ground when he dies:

Bring the books back to the Combo Master for a reward (a rune of your character's class) and he will now be available to use as a Combo Master: