A Wakestone is used to resurrect the Arisen's party in a dungeon battle. Otherwise the party will automatically exit a dungeon if they are killed before completing the dungeon's mission.
Wakestones are awarded in-game upon completion of certain story quests. Players can also purchase Wakestones via the online shop.
Wakestones are also used to purchase one type of gacha at Mountebank's shop. The Wakestone gacha gives the player much better odds of obtaining rare Vocation tokens.
Wakestones are also used to purchase storage upgrades at the online shop.