SO HERE'S WHAT'S WHAT WITH THAT: Ganon hid his two sigils in a specially built blood granite vault south of Maupertius. While Waver's got a key (and a second storage ability, thanks to monarch boon!) there's some spell work on there that has to be undone. (I checked this with Masa before he left.) That's gonna be the big problem, really, and where Waver'll need the extra hands. Obviously Waver's trusting Bruc to not leak this to anyone including Midnight Court.

Definitely an issue if kiddos. Buuuuut, as a possible thought: if Bruc notes that gold is being used to repel the dullahan, Waver can provide a chemical substance that dissolves gold.