Good evening!
Unless I'm mistaking how Myra's ability is supposed to work, I believe she might have a problem with her implementation. It seems like when her attraction visiting ability is triggered it's letting you cast every spell you have exiled even when you're not visiting the attraction they are linked to. In the below screenshots I had rolled 3, which only should've triggered two of the attractions, but the ability went on the stack a number of times and let me cast almost all of the exiled spells each time. Thanks!