Easy "Free at last" quest;
When you do the quest "free at last"in grizzle hills. you have to convert tree/rock creatures to be free. You get a green glowing stone and there is a chance to make them weakened and they attack you or they get free and you will progress. What I discovered is that when you use the stone at them, and the weaken. You will be able to dropcombat with feign death (probably other spells like vannish too). Then they will turn back and you will be able to try again. This way you can try it as many times as you want.
Short version of this text: :P
Step 1. get the quest
Step 2. use the stone on the trees
Step 3. fail (maby)
Step 4. Drop combat
Step 5. Use the stone again. and fail or win again.