Cad Goddeau D (level 30)
DISCLAIMER: Your Steps and Tasks may be different
Characters that were created after Patch Version 1.79 do not receive this Epic quest.
Go back to Innis Carthaig and look for Chieftess Niamh in the straw hut. Tell her, "Riocard", and "I walk the path of cad goddeau". She will tell you to seek out Riocard now, same spot where you killed your druid so go back to Bri Leth, loc=17500,15000. She will also give you a Staff of Mental Domination. Now if Riocard con'd purple/red/orange to you, you will need help killing him. If you're high level enough (30+) you could solo him.
Actually killing Riocard solo takes a bit of work since he has druid guard (the female guard aggroes if u attack Riocard and vice versa). The best approach would be to mez her, then nuke Riocard twice, sprint and run away. Riocard will chase you a good distance if you are close to him, but he will always walk back instead of running. Sit down, get some endurance and nuke him several more times while he is walking back to lure him again and eventually finish him off. If you succeed, you should move up to Step 11 of the quest in your journal. If you are having problems killing Riocard, I strongly suggest bringing friends.
Go back to the Old Hermit(in the camp south of Brynach in Bri Leith) and give him Bas' Jewel for your final reward - Mindlord's Crested Cap. Congratulations on finishing such a long quest.