Wind, the ghost of Eric Lecarde, resides in the Master's Keep and offers a series of optional quests. These quests typically involve defeating a certain number of specific enemies, finding particular items, or performing specific actions. Completing Wind's quests rewards you with valuable items, new sub-weapons, or even new spells for Charlotte. Always check in with Wind after completing a painting or exploring a new area, as new quests will become available. Some quests are repeatable, offering a good way to farm for specific items or experience. Pay close attention to the quest descriptions, as some require specific enemy types found only in certain paintings.
