After you learn magic and go through the Underground, you come up and go to a Dragon Tower. Learn Bone Break, or jeirda in the Ancient Language, and use Saphira Travel to Palancar Valley and get into Carvahall, where you start. Go to the crates and use Electricity on them. After all the crates are out of the way, press A on the stone and you will learn Blunt, which weakens Urgal's attacks or any other attacks, reccommended on Durza in Gil' Ead.