Seed of the Dragons is a very easy quest if you're good at combat and have decent gear. The Braavosi Great Sword is a great weapon to use on horseback as it's faster than a spear and is a two handed blade instead of a polearm.
- Speak to Bryen Farring in the castle of Dragonstone.
- Enter the castle again and speak with Ser Gilbert Farring.
- Leave Dragonstone and visit the Fishing Village just outside the town.
- Fight ~10 men in a foggy alleyway and kill Lacerys. Be warned, a couple of them have decent armor so bring a mace or piercing weapon.
- Travel back to Dragonstone and talk to Ser Gilbert Farring in the tavern to claim the Braavosi Long Sword.
Relationship with Stannis Baratheon +1