Battle Preparations has Geralt and friends assembling the resources they need for the final battle.
The Witcher 3: Battle Preparations
Head for your waypoint to meet Yennefer and the remaining members of the Lodge of Sorceresses. When you’ve finished talking with Yen, you have a rare chance to chat with Rita and Philippa if you enter the cabin rather than go to the next waypoint immediately.
When you’re ready, approach Avallac’h and Yennefer and agree to set sail. After cutscenes and dialogues, you’ll be given two new quests to pursue: The Sunstone and Veni Vidi Vigo. Halfway through The Sunstone you’ll also trigger Child of the Elder Blood.
All three must be completed to end Battle Preparations. You can do these quests in any order, but for simplicity's sake I suggest beginning with Veni Vidi Vigo.
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